diff --git a/filcnaplo/lib/helpers/subject.dart b/filcnaplo/lib/helpers/subject.dart
index 3cdb746..e571975 100644
--- a/filcnaplo/lib/helpers/subject.dart
+++ b/filcnaplo/lib/helpers/subject.dart
@@ -22,7 +22,8 @@ class SubjectIconData {
   });
 }
 
-SubjectIconVariants createIcon({required IconData material, required IconData cupertino}) {
+SubjectIconVariants createIcon(
+    {required IconData material, required IconData cupertino}) {
   return {
     IconPack.material: material,
     IconPack.cupertino: cupertino,
@@ -30,88 +31,224 @@ SubjectIconVariants createIcon({required IconData material, required IconData cu
 }
 
 class SubjectIcon {
-  static String resolveName({Subject? subject, String? subjectName}) => _resolve(subject: subject, subjectName: subjectName).name;
-  static IconData resolveVariant({Subject? subject, String? subjectName, required BuildContext context}) =>
-      _resolve(subject: subject, subjectName: subjectName).data[Provider.of<SettingsProvider>(context, listen: false).iconPack]!;
+  static String resolveName({GradeSubject? subject, String? subjectName}) =>
+      _resolve(subject: subject, subjectName: subjectName).name;
+  static IconData resolveVariant(
+          {GradeSubject? subject,
+          String? subjectName,
+          required BuildContext context}) =>
+      _resolve(subject: subject, subjectName: subjectName).data[
+          Provider.of<SettingsProvider>(context, listen: false).iconPack]!;
 
-  static SubjectIconData _resolve({Subject? subject, String? subjectName}) {
+  static SubjectIconData _resolve(
+      {GradeSubject? subject, String? subjectName}) {
     assert(!(subject == null && subjectName == null));
 
-    String name = (subject?.name ?? subjectName ?? "").toLowerCase().specialChars().trim();
-    String category = subject?.category.description.toLowerCase().specialChars() ?? "";
+    String name = (subject?.name ?? subjectName ?? "")
+        .toLowerCase()
+        .specialChars()
+        .trim();
+    String category =
+        subject?.category.description.toLowerCase().specialChars() ?? "";
 
     // todo: check for categories
     if (RegExp("mate(k|matika)").hasMatch(name) || category == "matematika") {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.function, material: Icons.calculate_outlined), name: "function");
-    } else if (RegExp("magyar nyelv|nyelvtan").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.textformat_alt, material: Icons.spellcheck_outlined), name: "textformat.alt");
-    } else if (RegExp("irodalom").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.book, material: Icons.menu_book_outlined), name: "book");
-    } else if (RegExp("tor(i|tenelem)").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.compass, material: Icons.hourglass_empty_outlined), name: "safari");
-    } else if (RegExp("foldrajz").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.map, material: Icons.public_outlined), name: "map");
-    } else if (RegExp("rajz|muvtori|muveszet|vizualis").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.paintbrush, material: Icons.palette_outlined), name: "paintbrush");
-    } else if (RegExp("fizika").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.lightbulb, material: Icons.emoji_objects_outlined), name: "lightbulb");
-    } else if (RegExp("^enek|zene|szolfezs|zongora|korus").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.music_note, material: Icons.music_note_outlined), name: "music.note");
-    } else if (RegExp("^tes(i|tneveles)|sport").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.sportscourt, material: Icons.sports_soccer_outlined), name: "sportscourt");
-    } else if (RegExp("kemia").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.lab_flask, material: Icons.science_outlined), name: "testtube.2");
-    } else if (RegExp("biologia").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.paw, material: Icons.pets_outlined), name: "pawprint");
-    } else if (RegExp("kornyezet|termeszet ?(tudomany|ismeret)|hon( es nep)?ismeret").hasMatch(name)) {
       return SubjectIconData(
-          data: createIcon(cupertino: CupertinoIcons.arrow_3_trianglepath, material: Icons.eco_outlined), name: "arrow.3.trianglepath");
+          data: createIcon(
+              cupertino: CupertinoIcons.function,
+              material: Icons.calculate_outlined),
+          name: "function");
+    } else if (RegExp("magyar nyelv|nyelvtan").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.textformat_alt,
+              material: Icons.spellcheck_outlined),
+          name: "textformat.alt");
+    } else if (RegExp("irodalom").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.book,
+              material: Icons.menu_book_outlined),
+          name: "book");
+    } else if (RegExp("tor(i|tenelem)").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.compass,
+              material: Icons.hourglass_empty_outlined),
+          name: "safari");
+    } else if (RegExp("foldrajz").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.map, material: Icons.public_outlined),
+          name: "map");
+    } else if (RegExp("rajz|muvtori|muveszet|vizualis").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.paintbrush,
+              material: Icons.palette_outlined),
+          name: "paintbrush");
+    } else if (RegExp("fizika").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.lightbulb,
+              material: Icons.emoji_objects_outlined),
+          name: "lightbulb");
+    } else if (RegExp("^enek|zene|szolfezs|zongora|korus").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.music_note,
+              material: Icons.music_note_outlined),
+          name: "music.note");
+    } else if (RegExp("^tes(i|tneveles)|sport").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.sportscourt,
+              material: Icons.sports_soccer_outlined),
+          name: "sportscourt");
+    } else if (RegExp("kemia").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.lab_flask,
+              material: Icons.science_outlined),
+          name: "testtube.2");
+    } else if (RegExp("biologia").hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.paw, material: Icons.pets_outlined),
+          name: "pawprint");
+    } else if (RegExp(
+            "kornyezet|termeszet ?(tudomany|ismeret)|hon( es nep)?ismeret")
+        .hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.arrow_3_trianglepath,
+              material: Icons.eco_outlined),
+          name: "arrow.3.trianglepath");
     } else if (RegExp("(hit|erkolcs)tan|vallas|etika").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.heart, material: Icons.favorite_border_outlined), name: "heart");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.heart,
+              material: Icons.favorite_border_outlined),
+          name: "heart");
     } else if (RegExp("penzugy").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.money_dollar, material: Icons.savings_outlined), name: "dollarsign");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.money_dollar,
+              material: Icons.savings_outlined),
+          name: "dollarsign");
     } else if (RegExp("informatika|szoftver|iroda|digitalis").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.device_laptop, material: Icons.computer_outlined), name: "laptopcomputer");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.device_laptop,
+              material: Icons.computer_outlined),
+          name: "laptopcomputer");
     } else if (RegExp("prog").hasMatch(name)) {
       return SubjectIconData(
-          data: createIcon(cupertino: CupertinoIcons.chevron_left_slash_chevron_right, material: Icons.code_outlined),
+          data: createIcon(
+              cupertino: CupertinoIcons.chevron_left_slash_chevron_right,
+              material: Icons.code_outlined),
           name: "chevron.left.forwardslash.chevron.right");
     } else if (RegExp("halozat").hasMatch(name)) {
       return SubjectIconData(
-          data: createIcon(cupertino: CupertinoIcons.antenna_radiowaves_left_right, material: Icons.wifi_tethering_outlined),
+          data: createIcon(
+              cupertino: CupertinoIcons.antenna_radiowaves_left_right,
+              material: Icons.wifi_tethering_outlined),
           name: "antenna.radiowaves.left.and.right");
     } else if (RegExp("szinhaz").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.hifispeaker, material: Icons.theater_comedy_outlined), name: "hifispeaker");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.hifispeaker,
+              material: Icons.theater_comedy_outlined),
+          name: "hifispeaker");
     } else if (RegExp("film|media").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.film, material: Icons.theaters_outlined), name: "film");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.film,
+              material: Icons.theaters_outlined),
+          name: "film");
     } else if (RegExp("elektro(tech)?nika").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.bolt, material: Icons.electrical_services_outlined), name: "bolt");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.bolt,
+              material: Icons.electrical_services_outlined),
+          name: "bolt");
     } else if (RegExp("gepesz|mernok|ipar").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.wrench, material: Icons.precision_manufacturing_outlined), name: "wrench");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.wrench,
+              material: Icons.precision_manufacturing_outlined),
+          name: "wrench");
     } else if (RegExp("technika").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.hammer, material: Icons.build_outlined), name: "hammer");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.hammer, material: Icons.build_outlined),
+          name: "hammer");
     } else if (RegExp("tanc").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.music_mic, material: Icons.speaker_outlined), name: "music.mic");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.music_mic,
+              material: Icons.speaker_outlined),
+          name: "music.mic");
     } else if (RegExp("filozofia").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.bubble_left, material: Icons.psychology_outlined), name: "bubble.left");
-    } else if (RegExp("osztaly(fonoki|kozosseg)").hasMatch(name) || name == "ofo") {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.group, material: Icons.groups_outlined), name: "person.3");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.bubble_left,
+              material: Icons.psychology_outlined),
+          name: "bubble.left");
+    } else if (RegExp("osztaly(fonoki|kozosseg)").hasMatch(name) ||
+        name == "ofo") {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.group, material: Icons.groups_outlined),
+          name: "person.3");
     } else if (RegExp("gazdasag").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.chart_pie, material: Icons.account_balance_outlined), name: "chart.pie");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.chart_pie,
+              material: Icons.account_balance_outlined),
+          name: "chart.pie");
     } else if (RegExp("szorgalom").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.checkmark_seal, material: Icons.verified_outlined), name: "checkmark.seal");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.checkmark_seal,
+              material: Icons.verified_outlined),
+          name: "checkmark.seal");
     } else if (RegExp("magatartas").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.smiley, material: Icons.emoji_people_outlined), name: "face.smiling");
-    } else if (RegExp("angol|nemet|francia|olasz|orosz|spanyol|latin|kinai|nyelv").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.globe, material: Icons.translate_outlined), name: "globe");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.smiley,
+              material: Icons.emoji_people_outlined),
+          name: "face.smiling");
+    } else if (RegExp(
+            "angol|nemet|francia|olasz|orosz|spanyol|latin|kinai|nyelv")
+        .hasMatch(name)) {
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.globe,
+              material: Icons.translate_outlined),
+          name: "globe");
     } else if (RegExp("linux").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(material: FilcIcons.linux, cupertino: FilcIcons.linux));
+      return SubjectIconData(
+          data: createIcon(
+              material: FilcIcons.linux, cupertino: FilcIcons.linux));
     } else if (RegExp("adatbazis").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.table_badge_more, material: Icons.table_chart), name: "table.badge.more");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.table_badge_more,
+              material: Icons.table_chart),
+          name: "table.badge.more");
     } else if (RegExp("asztali alkalmazasok").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.macwindow, material: Icons.desktop_windows_outlined), name: "macwindow");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.macwindow,
+              material: Icons.desktop_windows_outlined),
+          name: "macwindow");
     } else if (RegExp("projekt").hasMatch(name)) {
-      return SubjectIconData(data: createIcon(cupertino: CupertinoIcons.person_3_fill, material: Icons.groups_3), name: "person.3.fill");
+      return SubjectIconData(
+          data: createIcon(
+              cupertino: CupertinoIcons.person_3_fill,
+              material: Icons.groups_3),
+          name: "person.3.fill");
     }
 
     return SubjectIconData();
@@ -119,10 +256,13 @@ class SubjectIcon {
 }
 
 class ShortSubject {
-  static String resolve({Subject? subject, String? subjectName}) {
+  static String resolve({GradeSubject? subject, String? subjectName}) {
     assert(!(subject == null && subjectName == null));
 
-    String name = (subject?.name ?? subjectName ?? "").toLowerCase().specialChars().trim();
+    String name = (subject?.name ?? subjectName ?? "")
+        .toLowerCase()
+        .specialChars()
+        .trim();
     // String category = subject?.category.description.toLowerCase().specialChars() ?? "";
 
     if (RegExp("magyar irodalom").hasMatch(name)) {
@@ -137,7 +277,9 @@ class ShortSubject {
       return "Tesi";
     } else if (RegExp("tortenelem").hasMatch(name)) {
       return "Töri";
-    } else if (RegExp("(angol|nemet|francia|olasz|orosz|spanyol|latin|kinai) nyelv").hasMatch(name)) {
+    } else if (RegExp(
+            "(angol|nemet|francia|olasz|orosz|spanyol|latin|kinai) nyelv")
+        .hasMatch(name)) {
       return (subject?.name ?? subjectName ?? "?").replaceAll(" nyelv", "");
     } else if (RegExp("informatika").hasMatch(name)) {
       return "Infó";
diff --git a/filcnaplo/lib/models/subject_lesson_count.dart b/filcnaplo/lib/models/subject_lesson_count.dart
index 8a8adde..70d733e 100644
--- a/filcnaplo/lib/models/subject_lesson_count.dart
+++ b/filcnaplo/lib/models/subject_lesson_count.dart
@@ -5,17 +5,21 @@ enum SubjectLessonCountUpdateState { ready, updating }
 
 class SubjectLessonCount {
   DateTime lastUpdated;
-  Map<Subject, int> subjects;
+  Map<GradeSubject, int> subjects;
   SubjectLessonCountUpdateState state;
 
-  SubjectLessonCount({required this.lastUpdated, required this.subjects, this.state = SubjectLessonCountUpdateState.ready});
+  SubjectLessonCount(
+      {required this.lastUpdated,
+      required this.subjects,
+      this.state = SubjectLessonCountUpdateState.ready});
 
   factory SubjectLessonCount.fromMap(Map json) {
     return SubjectLessonCount(
-      lastUpdated: DateTime.fromMillisecondsSinceEpoch(json["last_updated"] ?? 0),
+      lastUpdated:
+          DateTime.fromMillisecondsSinceEpoch(json["last_updated"] ?? 0),
       subjects: ((json["subjects"] as Map?) ?? {}).map(
         (key, value) => MapEntry(
-          Subject(id: key, name: "", category: Category.fromJson({})),
+          GradeSubject(id: key, name: "", category: Category.fromJson({})),
           value,
         ),
       ),
diff --git a/filcnaplo_desktop_ui/lib/pages/absences/absences_page.dart b/filcnaplo_desktop_ui/lib/pages/absences/absences_page.dart
index f9270b5..5f25081 100644
--- a/filcnaplo_desktop_ui/lib/pages/absences/absences_page.dart
+++ b/filcnaplo_desktop_ui/lib/pages/absences/absences_page.dart
@@ -31,7 +31,7 @@ import 'absences_page.i18n.dart';
 enum AbsenceFilter { absences, delays, misses }
 
 class SubjectAbsence {
-  Subject subject;
+  GradeSubject subject;
   List<Absence> absences;
   double percentage;
 
@@ -56,7 +56,7 @@ class _AbsencesPageState extends State<AbsencesPage>
   late String firstName;
   late TabController _tabController;
   late List<SubjectAbsence> absences = [];
-  final Map<Subject, Lesson> _lessonCount = {};
+  final Map<GradeSubject, Lesson> _lessonCount = {};
 
   @override
   void initState() {
@@ -87,7 +87,7 @@ class _AbsencesPageState extends State<AbsencesPage>
   }
 
   void buildSubjectAbsences() {
-    Map<Subject, SubjectAbsence> _absences = {};
+    Map<GradeSubject, SubjectAbsence> _absences = {};
 
     for (final absence in absenceProvider.absences) {
       if (absence.delay != 0) continue;
diff --git a/filcnaplo_desktop_ui/lib/pages/grades/grade_subject_view.dart b/filcnaplo_desktop_ui/lib/pages/grades/grade_subject_view.dart
index 95571f1..1b30577 100644
--- a/filcnaplo_desktop_ui/lib/pages/grades/grade_subject_view.dart
+++ b/filcnaplo_desktop_ui/lib/pages/grades/grade_subject_view.dart
@@ -32,7 +32,7 @@ class GradeSubjectView extends StatefulWidget {
   const GradeSubjectView(this.subject, {Key? key, this.groupAverage = 0.0})
       : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final double groupAverage;
 
   void push(BuildContext context, {bool root = false}) {
@@ -62,7 +62,7 @@ class _GradeSubjectViewState extends State<GradeSubjectView> {
 
   bool gradeCalcMode = false;
 
-  List<Grade> getSubjectGrades(Subject subject) => !gradeCalcMode
+  List<Grade> getSubjectGrades(GradeSubject subject) => !gradeCalcMode
       ? gradeProvider.grades.where((e) => e.subject == subject).toList()
       : calculatorProvider.grades.where((e) => e.subject == subject).toList();
 
diff --git a/filcnaplo_desktop_ui/lib/pages/grades/grades_page.dart b/filcnaplo_desktop_ui/lib/pages/grades/grades_page.dart
index 0a2099b..06bbcd5 100644
--- a/filcnaplo_desktop_ui/lib/pages/grades/grades_page.dart
+++ b/filcnaplo_desktop_ui/lib/pages/grades/grades_page.dart
@@ -41,7 +41,7 @@ class _GradesPageState extends State<GradesPage> {
 
   int avgDropValue = 0;
 
-  List<Grade> getSubjectGrades(Subject subject, {int days = 0}) => gradeProvider
+  List<Grade> getSubjectGrades(GradeSubject subject, {int days = 0}) => gradeProvider
       .grades
       .where((e) =>
           e.subject == subject &&
@@ -51,14 +51,14 @@ class _GradesPageState extends State<GradesPage> {
       .toList();
 
   void generateTiles() {
-    List<Subject> subjects = gradeProvider.grades
+    List<GradeSubject> subjects = gradeProvider.grades
         .map((e) => e.subject)
         .toSet()
         .toList()
       ..sort((a, b) => a.name.compareTo(b.name));
     List<Widget> tiles = [];
 
-    Map<Subject, double> subjectAvgs = {};
+    Map<GradeSubject, double> subjectAvgs = {};
 
     tiles.addAll(subjects.map((subject) {
       List<Grade> subjectGrades = getSubjectGrades(subject);
diff --git a/filcnaplo_kreta_api/lib/models/absence.dart b/filcnaplo_kreta_api/lib/models/absence.dart
index 9997351..23d4db3 100644
--- a/filcnaplo_kreta_api/lib/models/absence.dart
+++ b/filcnaplo_kreta_api/lib/models/absence.dart
@@ -13,7 +13,7 @@ class Absence {
   Category? justification;
   Category? type;
   Category? mode;
-  Subject subject;
+  GradeSubject subject;
   DateTime lessonStart;
   DateTime lessonEnd;
   int? lessonIndex;
@@ -83,7 +83,7 @@ class Absence {
           : null,
       type: json["Tipus"] != null ? Category.fromJson(json["Tipus"]) : null,
       mode: json["Mod"] != null ? Category.fromJson(json["Mod"]) : null,
-      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
       lessonStart: lessonStart,
       lessonEnd: lessonEnd,
       lessonIndex: lessonIndex,
diff --git a/filcnaplo_kreta_api/lib/models/exam.dart b/filcnaplo_kreta_api/lib/models/exam.dart
index 31741b0..94055fa 100644
--- a/filcnaplo_kreta_api/lib/models/exam.dart
+++ b/filcnaplo_kreta_api/lib/models/exam.dart
@@ -10,7 +10,7 @@ class Exam {
   Category? mode;
   // int? subjectIndex;
   // String subjectName;
-  Subject subject;
+  GradeSubject subject;
   Teacher teacher;
   String description;
   String group;
@@ -42,7 +42,7 @@ class Exam {
       mode: json["Modja"] != null ? Category.fromJson(json["Modja"]) : null,
       // subjectIndex: json["OrarendiOraOraszama"],
       // subjectName: json["TantargyNeve"] ?? "",
-      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
       teacher: Teacher.fromString((json["RogzitoTanarNeve"] ?? "").trim()),
       description: (json["Temaja"] ?? "").trim(),
       group: json["OsztalyCsoport"] != null
diff --git a/filcnaplo_kreta_api/lib/models/grade.dart b/filcnaplo_kreta_api/lib/models/grade.dart
index 80c7db7..35d6709 100644
--- a/filcnaplo_kreta_api/lib/models/grade.dart
+++ b/filcnaplo_kreta_api/lib/models/grade.dart
@@ -12,7 +12,7 @@ class Grade {
   String description;
   GradeType type;
   String groupId;
-  Subject subject;
+  GradeSubject subject;
   Category? gradeType;
   Category mode;
   DateTime writeDate;
@@ -57,7 +57,7 @@ class Grade {
           ? Category.getGradeType(json["Tipus"]["Nev"])
           : GradeType.unknown,
       groupId: (json["OsztalyCsoport"] ?? {})["Uid"] ?? "",
-      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
       gradeType: json["ErtekFajta"] != null
           ? Category.fromJson(json["ErtekFajta"])
           : null,
diff --git a/filcnaplo_kreta_api/lib/models/group_average.dart b/filcnaplo_kreta_api/lib/models/group_average.dart
index e95f730..7441966 100644
--- a/filcnaplo_kreta_api/lib/models/group_average.dart
+++ b/filcnaplo_kreta_api/lib/models/group_average.dart
@@ -3,7 +3,7 @@ import 'package:filcnaplo_kreta_api/models/subject.dart';
 class GroupAverage {
   String uid;
   double average;
-  Subject subject;
+  GradeSubject subject;
   Map json;
 
   GroupAverage({required this.uid, required this.average, required this.subject, this.json = const {}});
@@ -12,7 +12,7 @@ class GroupAverage {
     return GroupAverage(
       uid: json["Uid"] ?? "",
       average: json["OsztalyCsoportAtlag"] ?? 0,
-      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
       json: json,
     );
   }
diff --git a/filcnaplo_kreta_api/lib/models/homework.dart b/filcnaplo_kreta_api/lib/models/homework.dart
index bd4ab39..88102ec 100644
--- a/filcnaplo_kreta_api/lib/models/homework.dart
+++ b/filcnaplo_kreta_api/lib/models/homework.dart
@@ -12,7 +12,7 @@ class Homework {
   bool homeworkEnabled;
   Teacher teacher;
   String content;
-  Subject subject;
+  GradeSubject subject;
   String group;
   List<HomeworkAttachment> attachments;
   String id;
@@ -48,7 +48,7 @@ class Homework {
       homeworkEnabled: json["IsTanuloHaziFeladatEnabled"] ?? false,
       teacher: Teacher.fromString((json["RogzitoTanarNeve"] ?? "").trim()),
       content: (json["Szoveg"] ?? "").trim(),
-      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
       group: json["OsztalyCsoport"] != null
           ? json["OsztalyCsoport"]["Uid"] ?? ""
           : "",
diff --git a/filcnaplo_kreta_api/lib/models/lesson.dart b/filcnaplo_kreta_api/lib/models/lesson.dart
index afa7d7c..7cd0008 100644
--- a/filcnaplo_kreta_api/lib/models/lesson.dart
+++ b/filcnaplo_kreta_api/lib/models/lesson.dart
@@ -6,7 +6,7 @@ class Lesson {
   Map? json;
   Category? status;
   DateTime date;
-  Subject subject;
+  GradeSubject subject;
   String lessonIndex;
   int? lessonYearIndex;
   Teacher? substituteTeacher;
@@ -68,7 +68,7 @@ class Lesson {
         date: json["Datum"] != null
             ? DateTime.parse(json["Datum"]).toLocal()
             : DateTime(0),
-        subject: Subject.fromJson(json["Tantargy"] ?? {}),
+        subject: GradeSubject.fromJson(json["Tantargy"] ?? {}),
         lessonIndex: json["Oraszam"] != null ? json["Oraszam"].toString() : "+",
         lessonYearIndex: json["OraEvesSorszama"],
         substituteTeacher: json["HelyettesTanarNeve"] != null
diff --git a/filcnaplo_kreta_api/lib/models/subject.dart b/filcnaplo_kreta_api/lib/models/subject.dart
index ec36d32..1ebd8ec 100644
--- a/filcnaplo_kreta_api/lib/models/subject.dart
+++ b/filcnaplo_kreta_api/lib/models/subject.dart
@@ -1,6 +1,6 @@
 import 'category.dart';
 
-class Subject {
+class GradeSubject {
   String id;
   Category category;
   String name;
@@ -8,11 +8,16 @@ class Subject {
 
   bool get isRenamed => renamedTo != null;
 
-  Subject({required this.id, required this.category, required this.name, this.renamedTo});
+  GradeSubject({
+    required this.id,
+    required this.category,
+    required this.name,
+    this.renamedTo,
+  });
 
-  factory Subject.fromJson(Map json) {
+  factory GradeSubject.fromJson(Map json) {
     final id = json["Uid"] ?? "";
-    return Subject(
+    return GradeSubject(
       id: id,
       category: Category.fromJson(json["Kategoria"] ?? {}),
       name: (json["Nev"] ?? "").trim(),
@@ -21,7 +26,7 @@ class Subject {
 
   @override
   bool operator ==(other) {
-    if (other is! Subject) return false;
+    if (other is! GradeSubject) return false;
     return id == other.id;
   }
 
diff --git a/filcnaplo_kreta_api/lib/providers/subject_provider.dart b/filcnaplo_kreta_api/lib/providers/subject_provider.dart
new file mode 100644
index 0000000..7a9ac4b
--- /dev/null
+++ b/filcnaplo_kreta_api/lib/providers/subject_provider.dart
@@ -0,0 +1,165 @@
+import 'package:filcnaplo/api/providers/user_provider.dart';
+import 'package:filcnaplo/api/providers/database_provider.dart';
+import 'package:filcnaplo/models/settings.dart';
+import 'package:filcnaplo/models/user.dart';
+import 'package:filcnaplo_kreta_api/client/api.dart';
+import 'package:filcnaplo_kreta_api/client/client.dart';
+import 'package:filcnaplo_kreta_api/models/grade.dart';
+import 'package:filcnaplo_kreta_api/models/group_average.dart';
+import 'package:filcnaplo_kreta_api/providers/grade_provider.i18n.dart';
+import 'package:flutter/material.dart';
+
+class SubjectProvider with ChangeNotifier {
+  // Private
+  late List<Grade> _grades;
+  late DateTime _lastSeen;
+  late String _groups;
+  List<GroupAverage> _groupAvg = [];
+  late final SettingsProvider _settings;
+  late final UserProvider _user;
+  late final DatabaseProvider _database;
+  late final KretaClient _kreta;
+
+  // Public
+  List<Grade> get grades => _grades;
+  DateTime get lastSeenDate =>
+      _settings.gradeOpeningFun ? _lastSeen : DateTime(3000);
+  String get groups => _groups;
+  List<GroupAverage> get groupAverages => _groupAvg;
+
+  SubjectProvider({
+    List<Grade> initialGrades = const [],
+    required SettingsProvider settings,
+    required UserProvider user,
+    required DatabaseProvider database,
+    required KretaClient kreta,
+  }) {
+    _settings = settings;
+    _user = user;
+    _database = database;
+    _kreta = kreta;
+
+    _grades = List.castFrom(initialGrades);
+    _lastSeen = DateTime.now();
+
+    if (_grades.isEmpty) restore();
+  }
+
+  Future<void> seenAll() async {
+    String? userId = _user.id;
+    if (userId != null) {
+      final userStore = _database.userStore;
+      userStore.storeLastSeenGrade(DateTime.now(), userId: userId);
+      _lastSeen = DateTime.now();
+    }
+  }
+
+  Future<void> restore() async {
+    String? userId = _user.id;
+
+    // Load grades from the database
+    if (userId != null) {
+      final userQuery = _database.userQuery;
+
+      _grades = await userQuery.getGrades(userId: userId);
+      await convertBySettings();
+      _groupAvg = await userQuery.getGroupAverages(userId: userId);
+      notifyListeners();
+      DateTime lastSeenDB = await userQuery.lastSeenGrade(userId: userId);
+      if (lastSeenDB.millisecondsSinceEpoch == 0 ||
+          lastSeenDB.year == 0 ||
+          !_settings.gradeOpeningFun) {
+        _lastSeen = DateTime.now();
+        await seenAll();
+      } else {
+        _lastSeen = lastSeenDB;
+      }
+      notifyListeners();
+    }
+  }
+
+  // good student mode, renamed subjects
+  Future<void> convertBySettings() async {
+    Map<String, String> renamedSubjects = _settings.renamedSubjectsEnabled
+        ? await _database.userQuery.renamedSubjects(userId: _user.user!.id)
+        : {};
+    Map<String, String> renamedTeachers = _settings.renamedTeachersEnabled
+        ? await _database.userQuery.renamedTeachers(userId: _user.user!.id)
+        : {};
+
+    for (Grade grade in _grades) {
+      grade.subject.renamedTo =
+          renamedSubjects.isNotEmpty ? renamedSubjects[grade.subject.id] : null;
+      grade.teacher.renamedTo =
+          renamedTeachers.isNotEmpty ? renamedTeachers[grade.teacher.id] : null;
+
+      grade.value.value =
+          _settings.goodStudent ? 5 : grade.json!["SzamErtek"] ?? 0;
+      grade.value.valueName = _settings.goodStudent
+          ? "Jeles".i18n
+          : '${grade.json!["SzovegesErtek"]}'
+              .replaceAll(RegExp(r'[(]+[12345]?[)]'), '')
+              .i18n;
+      grade.value.shortName = _settings.goodStudent
+          ? "Jeles".i18n
+          : '${grade.json!["SzovegesErtekelesRovidNev"]}' != "null" &&
+                  '${grade.json!["SzovegesErtekelesRovidNev"]}' != "-" &&
+                  '${grade.json!["SzovegesErtekelesRovidNev"]}'
+                          .replaceAll(RegExp(r'[0123456789]+[%]?'), '') !=
+                      ""
+              ? '${grade.json!["SzovegesErtekelesRovidNev"]}'.i18n
+              : grade.value.valueName;
+    }
+
+    notifyListeners();
+  }
+
+  // Fetches Grades from the Kreta API then stores them in the database
+  Future<void> fetch() async {
+    User? user = _user.user;
+    if (user == null) throw "Cannot fetch Grades for User null";
+    String iss = user.instituteCode;
+
+    List? gradesJson = await _kreta.getAPI(KretaAPI.grades(iss));
+    if (gradesJson == null) throw "Cannot fetch Grades for User ${user.id}";
+    List<Grade> grades = gradesJson.map((e) => Grade.fromJson(e)).toList();
+
+    if (grades.isNotEmpty || _grades.isNotEmpty) await store(grades);
+
+    List? groupsJson = await _kreta.getAPI(KretaAPI.groups(iss));
+    if (groupsJson == null || groupsJson.isEmpty) {
+      throw "Cannot fetch Groups for User ${user.id}";
+    }
+    _groups = (groupsJson[0]["OktatasNevelesiFeladat"] ?? {})["Uid"] ?? "";
+
+    List? groupAvgJson =
+        await _kreta.getAPI(KretaAPI.groupAverages(iss, _groups));
+    if (groupAvgJson == null) {
+      throw "Cannot fetch Class Averages for User ${user.id}";
+    }
+    final groupAvgs =
+        groupAvgJson.map((e) => GroupAverage.fromJson(e)).toList();
+    await storeGroupAvg(groupAvgs);
+  }
+
+  // Stores Grades in the database
+  Future<void> store(List<Grade> grades) async {
+    User? user = _user.user;
+    if (user == null) throw "Cannot store Grades for User null";
+    String userId = user.id;
+
+    await _database.userStore.storeGrades(grades, userId: userId);
+    _grades = grades;
+    await convertBySettings();
+  }
+
+  Future<void> storeGroupAvg(List<GroupAverage> groupAvgs) async {
+    _groupAvg = groupAvgs;
+
+    User? user = _user.user;
+    if (user == null) throw "Cannot store Grades for User null";
+    String userId = user.id;
+    await _database.userStore.storeGroupAverages(groupAvgs, userId: userId);
+    notifyListeners();
+  }
+}
diff --git a/filcnaplo_mobile_ui/lib/common/personality_card/personality_card.dart b/filcnaplo_mobile_ui/lib/common/personality_card/personality_card.dart
index a6dec8e..b442c38 100644
--- a/filcnaplo_mobile_ui/lib/common/personality_card/personality_card.dart
+++ b/filcnaplo_mobile_ui/lib/common/personality_card/personality_card.dart
@@ -35,12 +35,12 @@ class _PersonalityCardState extends State<PersonalityCard> {
   late SettingsProvider settings;
 
   late List<int> subjectAvgsList = [];
-  late Map<Subject, double> subjectAvgs = {};
+  late Map<GradeSubject, double> subjectAvgs = {};
   late double subjectAvg;
   late List<Grade> classWorkGrades;
   late Map<int, int> mostCommonGrade;
   late List<Absence> absences = [];
-  final Map<Subject, Lesson> _lessonCount = {};
+  final Map<GradeSubject, Lesson> _lessonCount = {};
   late int totalDelays;
   late int unexcusedAbsences;
 
@@ -48,14 +48,15 @@ class _PersonalityCardState extends State<PersonalityCard> {
 
   bool hold = false;
 
-  List<Grade> getSubjectGrades(Subject subject, {int days = 0}) => gradeProvider
-      .grades
-      .where((e) =>
-          e.subject == subject &&
-          e.type == GradeType.midYear &&
-          (days == 0 ||
-              e.date.isBefore(DateTime.now().subtract(Duration(days: days)))))
-      .toList();
+  List<Grade> getSubjectGrades(GradeSubject subject, {int days = 0}) =>
+      gradeProvider.grades
+          .where((e) =>
+              e.subject == subject &&
+              e.type == GradeType.midYear &&
+              (days == 0 ||
+                  e.date
+                      .isBefore(DateTime.now().subtract(Duration(days: days)))))
+          .toList();
 
   @override
   void initState() {
@@ -89,13 +90,13 @@ class _PersonalityCardState extends State<PersonalityCard> {
   }
 
   void getGrades() {
-    List<Subject> subjects = gradeProvider.grades
+    List<GradeSubject> subjects = gradeProvider.grades
         .map((e) => e.subject)
         .toSet()
         .toList()
       ..sort((a, b) => a.name.compareTo(b.name));
 
-    for (Subject subject in subjects) {
+    for (GradeSubject subject in subjects) {
       List<Grade> subjectGrades = getSubjectGrades(subject);
 
       double avg = AverageHelper.averageEvals(subjectGrades);
diff --git a/filcnaplo_mobile_ui/lib/common/widgets/absence/absence_subject_tile.dart b/filcnaplo_mobile_ui/lib/common/widgets/absence/absence_subject_tile.dart
index c8fc05d..adf5e5f 100755
--- a/filcnaplo_mobile_ui/lib/common/widgets/absence/absence_subject_tile.dart
+++ b/filcnaplo_mobile_ui/lib/common/widgets/absence/absence_subject_tile.dart
@@ -8,10 +8,16 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 class AbsenceSubjectTile extends StatelessWidget {
-  const AbsenceSubjectTile(this.subject, {Key? key, this.percentage = 0.0, this.excused = 0, this.unexcused = 0, this.pending = 0, this.onTap})
+  const AbsenceSubjectTile(this.subject,
+      {Key? key,
+      this.percentage = 0.0,
+      this.excused = 0,
+      this.unexcused = 0,
+      this.pending = 0,
+      this.onTap})
       : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final void Function()? onTap;
   final double percentage;
 
@@ -31,12 +37,20 @@ class AbsenceSubjectTile extends StatelessWidget {
         shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8.0)),
         visualDensity: VisualDensity.compact,
         onTap: onTap,
-        leading: Icon(SubjectIcon.resolveVariant(subject: subject, context: context), size: 32.0),
+        leading: Icon(
+            SubjectIcon.resolveVariant(subject: subject, context: context),
+            size: 32.0),
         title: Text(
           subject.renamedTo ?? subject.name.capital(),
           maxLines: 2,
           overflow: TextOverflow.ellipsis,
-          style: TextStyle(fontWeight: FontWeight.w600, fontSize: 15.0, fontStyle: subject.isRenamed && settingsProvider.renamedSubjectsItalics ? FontStyle.italic : null),
+          style: TextStyle(
+              fontWeight: FontWeight.w600,
+              fontSize: 15.0,
+              fontStyle:
+                  subject.isRenamed && settingsProvider.renamedSubjectsItalics
+                      ? FontStyle.italic
+                      : null),
         ),
         subtitle: AbsenceDisplay(excused, unexcused, pending),
         trailing: Row(
@@ -47,7 +61,10 @@ class AbsenceSubjectTile extends StatelessWidget {
               Stack(
                 alignment: Alignment.centerRight,
                 children: [
-                  const Opacity(child: Text("100%", style: TextStyle(fontFamily: "monospace")), opacity: 0),
+                  const Opacity(
+                      child: Text("100%",
+                          style: TextStyle(fontFamily: "monospace")),
+                      opacity: 0),
                   Text(
                     percentage.round().toString() + "%",
                     style: TextStyle(
diff --git a/filcnaplo_mobile_ui/lib/common/widgets/grade/grade_subject_tile.dart b/filcnaplo_mobile_ui/lib/common/widgets/grade/grade_subject_tile.dart
index 35e6509..00e87d0 100755
--- a/filcnaplo_mobile_ui/lib/common/widgets/grade/grade_subject_tile.dart
+++ b/filcnaplo_mobile_ui/lib/common/widgets/grade/grade_subject_tile.dart
@@ -16,7 +16,7 @@ class GradeSubjectTile extends StatelessWidget {
       this.averageBefore = 0.0})
       : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final void Function()? onTap;
   final double average;
   final double groupAverage;
@@ -56,7 +56,10 @@ class GradeSubjectTile extends StatelessWidget {
               fontWeight: FontWeight.w600,
               fontSize: 14.0,
               color: textColor,
-              fontStyle: settingsProvider.renamedSubjectsItalics && subject.isRenamed ? FontStyle.italic : null),
+              fontStyle:
+                  settingsProvider.renamedSubjectsItalics && subject.isRenamed
+                      ? FontStyle.italic
+                      : null),
         ),
         trailing: Row(
           mainAxisSize: MainAxisSize.min,
diff --git a/filcnaplo_mobile_ui/lib/pages/absences/absence_subject_view.dart b/filcnaplo_mobile_ui/lib/pages/absences/absence_subject_view.dart
index dc184e7..c0a0a95 100755
--- a/filcnaplo_mobile_ui/lib/pages/absences/absence_subject_view.dart
+++ b/filcnaplo_mobile_ui/lib/pages/absences/absence_subject_view.dart
@@ -22,10 +22,10 @@ class AbsenceSubjectView extends StatelessWidget {
   const AbsenceSubjectView(this.subject, {Key? key, this.absences = const []})
       : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final List<Absence> absences;
 
-  static void show(Subject subject, List<Absence> absences,
+  static void show(GradeSubject subject, List<Absence> absences,
       {required BuildContext context}) {
     Navigator.of(context, rootNavigator: true)
         .push<Absence>(CupertinoPageRoute(
diff --git a/filcnaplo_mobile_ui/lib/pages/absences/absences_page.dart b/filcnaplo_mobile_ui/lib/pages/absences/absences_page.dart
index dc2218d..81e8b5b 100755
--- a/filcnaplo_mobile_ui/lib/pages/absences/absences_page.dart
+++ b/filcnaplo_mobile_ui/lib/pages/absences/absences_page.dart
@@ -33,7 +33,7 @@ import 'absences_page.i18n.dart';
 enum AbsenceFilter { absences, delays, misses }
 
 class SubjectAbsence {
-  Subject subject;
+  GradeSubject subject;
   List<Absence> absences;
   double percentage;
 
@@ -58,7 +58,7 @@ class _AbsencesPageState extends State<AbsencesPage>
   late String firstName;
   late TabController _tabController;
   late List<SubjectAbsence> absences = [];
-  final Map<Subject, Lesson> _lessonCount = {};
+  final Map<GradeSubject, Lesson> _lessonCount = {};
 
   @override
   void initState() {
@@ -90,7 +90,7 @@ class _AbsencesPageState extends State<AbsencesPage>
   }
 
   void buildSubjectAbsences() {
-    Map<Subject, SubjectAbsence> _absences = {};
+    Map<GradeSubject, SubjectAbsence> _absences = {};
 
     for (final absence in absenceProvider.absences) {
       if (absence.delay != 0) continue;
diff --git a/filcnaplo_mobile_ui/lib/pages/grades/calculator/grade_calculator.dart b/filcnaplo_mobile_ui/lib/pages/grades/calculator/grade_calculator.dart
index 384afa5..5e531b5 100755
--- a/filcnaplo_mobile_ui/lib/pages/grades/calculator/grade_calculator.dart
+++ b/filcnaplo_mobile_ui/lib/pages/grades/calculator/grade_calculator.dart
@@ -16,7 +16,7 @@ import 'grade_calculator.i18n.dart';
 class GradeCalculator extends StatefulWidget {
   const GradeCalculator(this.subject, {Key? key}) : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
 
   @override
   _GradeCalculatorState createState() => _GradeCalculatorState();
diff --git a/filcnaplo_mobile_ui/lib/pages/grades/fail_warning.dart b/filcnaplo_mobile_ui/lib/pages/grades/fail_warning.dart
index 9e893fe..14b55cf 100755
--- a/filcnaplo_mobile_ui/lib/pages/grades/fail_warning.dart
+++ b/filcnaplo_mobile_ui/lib/pages/grades/fail_warning.dart
@@ -7,7 +7,7 @@ import 'grades_page.i18n.dart';
 class FailWarning extends StatelessWidget {
   const FailWarning({Key? key, required this.subjectAvgs}) : super(key: key);
 
-  final Map<Subject, double> subjectAvgs;
+  final Map<GradeSubject, double> subjectAvgs;
 
   @override
   Widget build(BuildContext context) {
diff --git a/filcnaplo_mobile_ui/lib/pages/grades/grade_subject_view.dart b/filcnaplo_mobile_ui/lib/pages/grades/grade_subject_view.dart
index 21949b2..efc4cf4 100755
--- a/filcnaplo_mobile_ui/lib/pages/grades/grade_subject_view.dart
+++ b/filcnaplo_mobile_ui/lib/pages/grades/grade_subject_view.dart
@@ -42,7 +42,7 @@ class GradeSubjectView extends StatefulWidget {
   const GradeSubjectView(this.subject, {Key? key, this.groupAverage = 0.0})
       : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final double groupAverage;
 
   void push(BuildContext context, {bool root = false}) {
@@ -77,7 +77,7 @@ class _GradeSubjectViewState extends State<GradeSubjectView> {
 
   String plan = '';
 
-  List<Grade> getSubjectGrades(Subject subject) => !gradeCalcMode
+  List<Grade> getSubjectGrades(GradeSubject subject) => !gradeCalcMode
       ? gradeProvider.grades.where((e) => e.subject == subject).toList()
       : calculatorProvider.grades.where((e) => e.subject == subject).toList();
 
diff --git a/filcnaplo_mobile_ui/lib/pages/grades/grades_page.dart b/filcnaplo_mobile_ui/lib/pages/grades/grades_page.dart
index 8f0f6ca..9803597 100755
--- a/filcnaplo_mobile_ui/lib/pages/grades/grades_page.dart
+++ b/filcnaplo_mobile_ui/lib/pages/grades/grades_page.dart
@@ -48,24 +48,25 @@ class _GradesPageState extends State<GradesPage> {
 
   int avgDropValue = 0;
 
-  List<Grade> getSubjectGrades(Subject subject, {int days = 0}) => gradeProvider
-      .grades
-      .where((e) =>
-          e.subject == subject &&
-          e.type == GradeType.midYear &&
-          (days == 0 ||
-              e.date.isBefore(DateTime.now().subtract(Duration(days: days)))))
-      .toList();
+  List<Grade> getSubjectGrades(GradeSubject subject, {int days = 0}) =>
+      gradeProvider.grades
+          .where((e) =>
+              e.subject == subject &&
+              e.type == GradeType.midYear &&
+              (days == 0 ||
+                  e.date
+                      .isBefore(DateTime.now().subtract(Duration(days: days)))))
+          .toList();
 
   void generateTiles() {
-    List<Subject> subjects = gradeProvider.grades
+    List<GradeSubject> subjects = gradeProvider.grades
         .map((e) => e.subject)
         .toSet()
         .toList()
       ..sort((a, b) => a.name.compareTo(b.name));
     List<Widget> tiles = [];
 
-    Map<Subject, double> subjectAvgs = {};
+    Map<GradeSubject, double> subjectAvgs = {};
 
     tiles.addAll(subjects.map((subject) {
       List<Grade> subjectGrades = getSubjectGrades(subject);
diff --git a/filcnaplo_mobile_ui/lib/screens/summary/pages/allsum_page.dart b/filcnaplo_mobile_ui/lib/screens/summary/pages/allsum_page.dart
index b14a215..01900ff 100644
--- a/filcnaplo_mobile_ui/lib/screens/summary/pages/allsum_page.dart
+++ b/filcnaplo_mobile_ui/lib/screens/summary/pages/allsum_page.dart
@@ -30,7 +30,7 @@ class _AllSumBodyState extends State<AllSumBody> {
   int avgDropValue = 0;
   bool animation = false;
 
-  List<Grade> getSubjectGrades(Subject subject, {int days = 0}) => gradeProvider
+  List<Grade> getSubjectGrades(GradeSubject subject, {int days = 0}) => gradeProvider
       .grades
       .where((e) =>
           e.subject == subject &&
diff --git a/filcnaplo_mobile_ui/lib/screens/summary/pages/grades_page.dart b/filcnaplo_mobile_ui/lib/screens/summary/pages/grades_page.dart
index 5b75cbb..d56e3e4 100644
--- a/filcnaplo_mobile_ui/lib/screens/summary/pages/grades_page.dart
+++ b/filcnaplo_mobile_ui/lib/screens/summary/pages/grades_page.dart
@@ -50,14 +50,15 @@ class _GradesBodyState extends State<GradesBody> {
   int avgDropValue = 0;
   bool animation = false;
 
-  List<Grade> getSubjectGrades(Subject subject, {int days = 0}) => gradeProvider
-      .grades
-      .where((e) =>
-          e.subject == subject &&
-          e.type == GradeType.midYear &&
-          (days == 0 ||
-              e.date.isBefore(DateTime.now().subtract(Duration(days: days)))))
-      .toList();
+  List<Grade> getSubjectGrades(GradeSubject subject, {int days = 0}) =>
+      gradeProvider.grades
+          .where((e) =>
+              e.subject == subject &&
+              e.type == GradeType.midYear &&
+              (days == 0 ||
+                  e.date
+                      .isBefore(DateTime.now().subtract(Duration(days: days)))))
+          .toList();
 
   @override
   void initState() {
@@ -74,18 +75,18 @@ class _GradesBodyState extends State<GradesBody> {
   }
 
   void generateTiles({required int filter}) {
-    List<Subject> subjects = gradeProvider.grades
+    List<GradeSubject> subjects = gradeProvider.grades
         .map((e) => e.subject)
         .toSet()
         .toList()
       ..sort((a, b) => a.name.compareTo(b.name));
     List<Widget> tiles = [];
 
-    Map<Subject, double> subjectAvgs = {};
+    Map<GradeSubject, double> subjectAvgs = {};
 
     var count = 1;
 
-    for (Subject subject in subjects) {
+    for (GradeSubject subject in subjects) {
       List<Grade> subjectGrades = getSubjectGrades(subject);
 
       double avg = AverageHelper.averageEvals(subjectGrades);
diff --git a/filcnaplo_mobile_ui/lib/screens/summary/pages/lessons_page.dart b/filcnaplo_mobile_ui/lib/screens/summary/pages/lessons_page.dart
index cd7c248..a90a02b 100644
--- a/filcnaplo_mobile_ui/lib/screens/summary/pages/lessons_page.dart
+++ b/filcnaplo_mobile_ui/lib/screens/summary/pages/lessons_page.dart
@@ -28,7 +28,7 @@ List<String> faces = [
 ];
 
 class SubjectAbsence {
-  Subject subject;
+  GradeSubject subject;
   List<Absence> absences;
   double percentage;
 
@@ -52,7 +52,7 @@ class _LessonsBodyState extends State<LessonsBody> {
   late List<SubjectAbsence> absences = [];
   late List<Widget> lessons = [];
   late List<Absence> delays = [];
-  final Map<Subject, Lesson> _lessonCount = {};
+  final Map<GradeSubject, Lesson> _lessonCount = {};
 
   @override
   void initState() {
@@ -85,7 +85,7 @@ class _LessonsBodyState extends State<LessonsBody> {
   }
 
   void buildSubjectAbsences() {
-    Map<Subject, SubjectAbsence> _absences = {};
+    Map<GradeSubject, SubjectAbsence> _absences = {};
 
     for (final absence in absenceProvider.absences) {
       if (absence.delay != 0) continue;
diff --git a/filcnaplo_premium/lib/providers/goal_provider.dart b/filcnaplo_premium/lib/providers/goal_provider.dart
index 18f3244..1529903 100644
--- a/filcnaplo_premium/lib/providers/goal_provider.dart
+++ b/filcnaplo_premium/lib/providers/goal_provider.dart
@@ -9,10 +9,10 @@ class GoalProvider extends ChangeNotifier {
   final UserProvider _user;
 
   late bool _done = false;
-  late Subject? _doneSubject;
+  late GradeSubject? _doneSubject;
 
   bool get hasDoneGoals => _done;
-  Subject? get doneSubject => _doneSubject;
+  GradeSubject? get doneSubject => _doneSubject;
 
   GoalProvider({
     required DatabaseProvider database,
@@ -24,7 +24,7 @@ class GoalProvider extends ChangeNotifier {
     var goalAvgs = await _db.userQuery.subjectGoalAverages(userId: _user.id!);
     var beforeAvgs = await _db.userQuery.subjectGoalBefores(userId: _user.id!);
 
-    List<Subject> subjects = gradeProvider.grades
+    List<GradeSubject> subjects = gradeProvider.grades
         .map((e) => e.subject)
         .toSet()
         .toList()
@@ -45,7 +45,7 @@ class GoalProvider extends ChangeNotifier {
     _doneSubject = null;
   }
 
-  Future<void> clearGoal(Subject subject) async {
+  Future<void> clearGoal(GradeSubject subject) async {
     final goalPlans = await _db.userQuery.subjectGoalPlans(userId: _user.id!);
     final goalAvgs = await _db.userQuery.subjectGoalAverages(userId: _user.id!);
     final goalBeforeGrades =
diff --git a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_complete_modal.dart b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_complete_modal.dart
index 0b2d9c1..cce1654 100644
--- a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_complete_modal.dart
+++ b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_complete_modal.dart
@@ -20,7 +20,7 @@ class GoalCompleteModal extends StatelessWidget {
 
   final UserProvider user;
   final DatabaseProvider database;
-  final Subject subject;
+  final GradeSubject subject;
 
   final double goalAverage;
   final double beforeAverage;
@@ -218,7 +218,7 @@ class GoalCompleteModal extends StatelessWidget {
   }
 
   static Future<T?> show<T>(
-    Subject subject, {
+    GradeSubject subject, {
     required BuildContext context,
   }) async {
     UserProvider user = Provider.of<UserProvider>(context, listen: false);
diff --git a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner.dart b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner.dart
index 22878a9..31e445b 100644
--- a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner.dart
+++ b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner.dart
@@ -64,7 +64,7 @@ class GoalPlanner {
                         form: '',
                         groupId: '',
                         type: GradeType.midYear,
-                        subject: Subject.fromJson({}),
+                        subject: GradeSubject.fromJson({}),
                         mode: Category.fromJson({}),
                         seenDate: DateTime(0),
                         writeDate: DateTime(0),
diff --git a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner_screen.dart b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner_screen.dart
index eef91b3..258a0f1 100644
--- a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner_screen.dart
+++ b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_planner_screen.dart
@@ -25,7 +25,7 @@ enum PlanResult {
 }
 
 class GoalPlannerScreen extends StatefulWidget {
-  final Subject subject;
+  final GradeSubject subject;
 
   const GoalPlannerScreen({Key? key, required this.subject}) : super(key: key);
 
@@ -42,7 +42,7 @@ class _GoalPlannerScreenState extends State<GoalPlannerScreen> {
 
   bool gradeCalcMode = false;
 
-  List<Grade> getSubjectGrades(Subject subject) => !gradeCalcMode
+  List<Grade> getSubjectGrades(GradeSubject subject) => !gradeCalcMode
       ? gradeProvider.grades.where((e) => e.subject == subject).toList()
       : calculatorProvider.grades.where((e) => e.subject == subject).toList();
 
diff --git a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_state_screen.dart b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_state_screen.dart
index 0141fac..39123ed 100644
--- a/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_state_screen.dart
+++ b/filcnaplo_premium/lib/ui/mobile/goal_planner/goal_state_screen.dart
@@ -22,7 +22,7 @@ import 'goal_planner_screen.dart';
 import 'graph.dart';
 
 class GoalStateScreen extends StatefulWidget {
-  final Subject subject;
+  final GradeSubject subject;
 
   const GoalStateScreen({Key? key, required this.subject}) : super(key: key);
 
@@ -77,10 +77,10 @@ class _GoalStateScreenState extends State<GoalStateScreen> {
     setState(() {});
   }
 
-  List<Grade> getSubjectGrades(Subject subject) =>
+  List<Grade> getSubjectGrades(GradeSubject subject) =>
       gradeProvider.grades.where((e) => (e.subject == subject)).toList();
 
-  List<Grade> getAfterGoalGrades(Subject subject) => gradeProvider.grades
+  List<Grade> getAfterGoalGrades(GradeSubject subject) => gradeProvider.grades
       .where((e) => (e.subject == subject && e.date.isAfter(goalPinDate)))
       .toList();
 
diff --git a/filcnaplo_premium/lib/ui/mobile/settings/modify_subject_names.dart b/filcnaplo_premium/lib/ui/mobile/settings/modify_subject_names.dart
index 37daf97..d20f7cd 100644
--- a/filcnaplo_premium/lib/ui/mobile/settings/modify_subject_names.dart
+++ b/filcnaplo_premium/lib/ui/mobile/settings/modify_subject_names.dart
@@ -91,7 +91,7 @@ class _ModifySubjectNamesState extends State<ModifySubjectNames> {
   final _subjectName = TextEditingController();
   String? selectedSubjectId;
 
-  late List<Subject> subjects;
+  late List<GradeSubject> subjects;
   late UserProvider user;
   late DatabaseProvider dbProvider;
   late SettingsProvider settings;
@@ -294,9 +294,11 @@ class _ModifySubjectNamesState extends State<ModifySubjectNames> {
               children: [
                 Panel(
                   child: SwitchListTile(
-                      title: Text("italics_toggle".i18n),
-                      onChanged: (value) => settings.update(renamedSubjectsItalics: value),
-                      value: settings.renamedSubjectsItalics,),
+                    title: Text("italics_toggle".i18n),
+                    onChanged: (value) =>
+                        settings.update(renamedSubjectsItalics: value),
+                    value: settings.renamedSubjectsItalics,
+                  ),
                 ),
                 const SizedBox(
                   height: 20,
@@ -339,7 +341,7 @@ class _ModifySubjectNamesState extends State<ModifySubjectNames> {
                       child: Column(
                         children: snapshot.data!.keys.map(
                           (key) {
-                            Subject? subject = subjects
+                            GradeSubject? subject = subjects
                                 .firstWhere((element) => key == element.id);
                             String renameTo = snapshot.data![key]!;
                             return RenamedSubjectItem(
@@ -385,7 +387,7 @@ class RenamedSubjectItem extends StatelessWidget {
     required this.removeCallback,
   }) : super(key: key);
 
-  final Subject subject;
+  final GradeSubject subject;
   final String renamedTo;
   final void Function() modifyCallback;
   final void Function() removeCallback;