diff --git a/lib/main.dart b/lib/main.dart
index 3d24c7e..0652d1f 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,10 +1,22 @@
 import 'package:flutter/material.dart';
 
+import 'model/repositories/local_repository.dart';
 import 'pages/task_edit_page.dart';
 import 'pages/task_overview_page.dart';
+import 'service/controller_scope.dart';
+import 'service/task_controller.dart';
 
-void main() {
-  runApp(const MainApp());
+void main() async {
+  final repository = LocalRepository();
+  WidgetsFlutterBinding.ensureInitialized();
+  await repository.initialize();
+
+  runApp(
+    ControllerScope(
+      controller: TaskController(repository),
+      child: const MainApp(),
+    ),
+  );
 }
 
 class MainApp extends StatelessWidget {
diff --git a/lib/pages/task_overview_page.dart b/lib/pages/task_overview_page.dart
index 41447ef..4cb59bb 100644
--- a/lib/pages/task_overview_page.dart
+++ b/lib/pages/task_overview_page.dart
@@ -1,8 +1,9 @@
 import 'package:flutter/material.dart';
 
-import '../example_data.dart';
 import '../model/callback_models/create_task_request.dart';
+import '../model/extensions/controller_context.dart';
 import '../model/task.dart';
+import '../service/task_controller.dart';
 import '../service/tools.dart';
 import 'task_edit_page.dart';
 
@@ -15,7 +16,8 @@ class TaskOverviewPage extends StatefulWidget {
 }
 
 class _TaskOverviewPageState extends State<TaskOverviewPage> {
-  //TODO: Replace example data call
+  List<Task> get tasks => context.controller<TaskController>().orderedTasks;
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -23,8 +25,7 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
       body: ReorderableListView.builder(
         itemBuilder: itemBuilder,
         itemCount: tasks.length,
-        onReorderItem: (oldIndex, newIndex) =>
-            reorderList(tasks, oldIndex, newIndex),
+        onReorderItem: context.controller<TaskController>().reorderTask,
       ),
       floatingActionButton: FloatingActionButton(
         onPressed: onCreateTaskTapped,
@@ -42,10 +43,10 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
       subtitle: Text(task.description),
       onTap: () async {
         final result = await onTaskTapped(task);
-        if (result != null) {
-          tasks.remove(task);
-          tasks.add(result.toTask(id: task.id, position: task.position));
-          setState(() {});
+        if (result != null && context.mounted) {
+          context.controller<TaskController>().saveTask(
+            result.toTask(id: task.id),
+          );
         }
       },
     );
@@ -58,28 +59,15 @@ class _TaskOverviewPageState extends State<TaskOverviewPage> {
     return result as CreateTaskRequest?;
   }
 
-  List<Task> reorderList(List<Task> tasks, oldIndex, newIndex) {
-    final item = tasks.removeAt(oldIndex);
-    tasks.insert(newIndex, item);
-
-    final List<Task> reordered = [];
-
-    for (int i = 0; i < tasks.length; i++) {
-      reordered.add(tasks.elementAt(i).copyWith(position: i));
-    }
-
-    return reordered;
-  }
-
   void onCreateTaskTapped() async {
-    //TODO: example data call
     final result =
         await Navigator.of(context).pushNamed(TaskEditPage.routeName)
             as CreateTaskRequest?;
 
-    if (result != null) {
-      tasks.add(result.toTask(id: generateId(), position: tasks.length));
-      setState(() {});
+    if (result != null && context.mounted) {
+      context.controller<TaskController>().saveTask(
+        result.toTask(id: generateId()),
+      );
     }
   }
 }