diff --git a/lib/config/design_config.dart b/lib/config/design_config.dart
new file mode 100644
index 0000000..ebfbcd1
--- /dev/null
+++ b/lib/config/design_config.dart
@@ -0,0 +1 @@
+class DesignConfig {}
diff --git a/lib/constants/app_strings.dart b/lib/constants/app_strings.dart
new file mode 100644
index 0000000..e8f4321
--- /dev/null
+++ b/lib/constants/app_strings.dart
@@ -0,0 +1 @@
+class AppStrings {}
diff --git a/lib/models/enums.dart b/lib/models/enums.dart
new file mode 100644
index 0000000..e10ad91
--- /dev/null
+++ b/lib/models/enums.dart
@@ -0,0 +1,5 @@
+enum AppState {
+  idle,
+  busy,
+  failed,
+}
diff --git a/lib/providers/core_provider.dart b/lib/providers/core_provider.dart
new file mode 100644
index 0000000..3238711
--- /dev/null
+++ b/lib/providers/core_provider.dart
@@ -0,0 +1,13 @@
+import 'package:didvan/models/enums.dart';
+import 'package:flutter/cupertino.dart';
+
+class CoreProvier with ChangeNotifier {
+  AppState _appState = AppState.idle;
+
+  set appState(AppState newState) {
+    _appState = newState;
+    notifyListeners();
+  }
+
+  AppState get appState => _appState;
+}
diff --git a/lib/providers/user_provider.dart b/lib/providers/user_provider.dart
new file mode 100644
index 0000000..e3efcab
--- /dev/null
+++ b/lib/providers/user_provider.dart
@@ -0,0 +1,3 @@
+import 'package:didvan/providers/core_provider.dart';
+
+class UserProvider extends CoreProvier {}