diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000000000000000000000000000000000000..b0b3e1fe2543143896ee06ae7b9984f8bd038f73
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,18 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.json]
+indent_size = 2
+
+[*.yaml]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.gitignore b/.gitignore
index 361df94f91db934b411ea13244ac8db6f41f3888..54ae0222de3e722adfb2b48c14d77c4d074dafda 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@
 .buildlog/
 .history
 .svn/
+migrate_working_dir/
 
 # IntelliJ related
 *.iml
diff --git a/assets/fonts/Nunito-Bold.ttf b/assets/fonts/Nunito-Bold.ttf
deleted file mode 100644
index 6519feb781449ebe0015cbc74dfd9e13110fbba9..0000000000000000000000000000000000000000
Binary files a/assets/fonts/Nunito-Bold.ttf and /dev/null differ
diff --git a/assets/fonts/Nunito-Light.ttf b/assets/fonts/Nunito-Light.ttf
deleted file mode 100644
index 8a0736c41cd6c2a1225d356bf274de1d0afc3497..0000000000000000000000000000000000000000
Binary files a/assets/fonts/Nunito-Light.ttf and /dev/null differ
diff --git a/assets/fonts/Nunito-Medium.ttf b/assets/fonts/Nunito-Medium.ttf
deleted file mode 100644
index 88fccdc0638b6f5d6ac49d9d269dc3d518618ad1..0000000000000000000000000000000000000000
Binary files a/assets/fonts/Nunito-Medium.ttf and /dev/null differ
diff --git a/assets/fonts/Nunito-Regular.ttf b/assets/fonts/Nunito-Regular.ttf
deleted file mode 100644
index e7b8375a896ef0cd8e06730a78c84532b377e784..0000000000000000000000000000000000000000
Binary files a/assets/fonts/Nunito-Regular.ttf and /dev/null differ
diff --git a/fastlane/metadata/android/en-US/changelogs/14.txt b/fastlane/metadata/android/en-US/changelogs/14.txt
new file mode 100644
index 0000000000000000000000000000000000000000..65ba5e83570223adc45ccea599a3487b24b8a7dd
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/14.txt
@@ -0,0 +1 @@
+Use flutter_custom_toolbox for common features.
diff --git a/fastlane/metadata/android/fr-FR/changelogs/14.txt b/fastlane/metadata/android/fr-FR/changelogs/14.txt
new file mode 100644
index 0000000000000000000000000000000000000000..258c624fb3898d91b6b70d7d99db2719c1bf0751
--- /dev/null
+++ b/fastlane/metadata/android/fr-FR/changelogs/14.txt
@@ -0,0 +1 @@
+Utilisation de flutter_custom_toolbox pour les fonctionnalités communes.
diff --git a/lib/config/activity_page.dart b/lib/config/activity_page.dart
index a3106b2e50a32e17b7f7d9f740feab599b8c2d09..cc144808239b64f7877419e270d535456b16f8f5 100644
--- a/lib/config/activity_page.dart
+++ b/lib/config/activity_page.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:unicons/unicons.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/ui/pages/editor.dart';
 import 'package:midisynth/ui/pages/home.dart';
diff --git a/lib/config/default_activity_settings.dart b/lib/config/default_activity_settings.dart
index 54406879d5d2f777cb492b0454d50675b92a3fb3..4ae5ac89139d6292da8d9083c32ad482f3e3402a 100644
--- a/lib/config/default_activity_settings.dart
+++ b/lib/config/default_activity_settings.dart
@@ -1,4 +1,4 @@
-import 'package:midisynth/utils/tools.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 class DefaultActivitySettings {
   // available activity parameters codes
diff --git a/lib/config/default_global_settings.dart b/lib/config/default_global_settings.dart
index d70606896ec28a72c02600e1a6d2f38b91f73650..d92229c2e02064684ed4a2caeb272ff63325776a 100644
--- a/lib/config/default_global_settings.dart
+++ b/lib/config/default_global_settings.dart
@@ -1,4 +1,4 @@
-import 'package:midisynth/utils/tools.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 class DefaultGlobalSettings {
   // available global parameters codes
diff --git a/lib/config/screen.dart b/lib/config/screen.dart
index 66edd028023cfd25ee7f37f9f23fcb9b8f2060c9..0e8dcea52fc82f0f904ee04e84d7eef48a6201fb 100644
--- a/lib/config/screen.dart
+++ b/lib/config/screen.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:unicons/unicons.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/ui/screens/about.dart';
 import 'package:midisynth/ui/screens/activity.dart';
diff --git a/lib/config/theme.dart b/lib/config/theme.dart
deleted file mode 100644
index 74f532fd5abf693979118609564d29167e902009..0000000000000000000000000000000000000000
--- a/lib/config/theme.dart
+++ /dev/null
@@ -1,190 +0,0 @@
-import 'package:flutter/material.dart';
-
-/// Colors from Tailwind CSS (v3.0) - June 2022
-///
-/// https://tailwindcss.com/docs/customizing-colors
-
-const int _primaryColor = 0xFF6366F1;
-const MaterialColor primarySwatch = MaterialColor(_primaryColor, <int, Color>{
-  50: Color(0xFFEEF2FF), // indigo-50
-  100: Color(0xFFE0E7FF), // indigo-100
-  200: Color(0xFFC7D2FE), // indigo-200
-  300: Color(0xFFA5B4FC), // indigo-300
-  400: Color(0xFF818CF8), // indigo-400
-  500: Color(_primaryColor), // indigo-500
-  600: Color(0xFF4F46E5), // indigo-600
-  700: Color(0xFF4338CA), // indigo-700
-  800: Color(0xFF3730A3), // indigo-800
-  900: Color(0xFF312E81), // indigo-900
-});
-
-const int _textColor = 0xFF64748B;
-const MaterialColor textSwatch = MaterialColor(_textColor, <int, Color>{
-  50: Color(0xFFF8FAFC), // slate-50
-  100: Color(0xFFF1F5F9), // slate-100
-  200: Color(0xFFE2E8F0), // slate-200
-  300: Color(0xFFCBD5E1), // slate-300
-  400: Color(0xFF94A3B8), // slate-400
-  500: Color(_textColor), // slate-500
-  600: Color(0xFF475569), // slate-600
-  700: Color(0xFF334155), // slate-700
-  800: Color(0xFF1E293B), // slate-800
-  900: Color(0xFF0F172A), // slate-900
-});
-
-const Color errorColor = Color(0xFFDC2626); // red-600
-
-final ColorScheme lightColorScheme = ColorScheme.light(
-  primary: primarySwatch.shade500,
-  secondary: primarySwatch.shade500,
-  onSecondary: Colors.white,
-  error: errorColor,
-  onSurface: textSwatch.shade500,
-  surface: textSwatch.shade50,
-  surfaceContainerHighest: Colors.white,
-  shadow: textSwatch.shade900.withOpacity(.1),
-);
-
-final ColorScheme darkColorScheme = ColorScheme.dark(
-  primary: primarySwatch.shade500,
-  secondary: primarySwatch.shade500,
-  onSecondary: Colors.white,
-  error: errorColor,
-  onSurface: textSwatch.shade300,
-  surface: const Color(0xFF262630),
-  surfaceContainerHighest: const Color(0xFF282832),
-  shadow: textSwatch.shade900.withOpacity(.2),
-);
-
-final ThemeData lightTheme = ThemeData(
-  colorScheme: lightColorScheme,
-  fontFamily: 'Nunito',
-  textTheme: TextTheme(
-    displayLarge: TextStyle(
-      color: textSwatch.shade700,
-      fontFamily: 'Nunito',
-    ),
-    displayMedium: TextStyle(
-      color: textSwatch.shade600,
-      fontFamily: 'Nunito',
-    ),
-    displaySmall: TextStyle(
-      color: textSwatch.shade500,
-      fontFamily: 'Nunito',
-    ),
-    headlineLarge: TextStyle(
-      color: textSwatch.shade700,
-      fontFamily: 'Nunito',
-    ),
-    headlineMedium: TextStyle(
-      color: textSwatch.shade600,
-      fontFamily: 'Nunito',
-    ),
-    headlineSmall: TextStyle(
-      color: textSwatch.shade500,
-      fontFamily: 'Nunito',
-    ),
-    titleLarge: TextStyle(
-      color: textSwatch.shade700,
-      fontFamily: 'Nunito',
-    ),
-    titleMedium: TextStyle(
-      color: textSwatch.shade600,
-      fontFamily: 'Nunito',
-    ),
-    titleSmall: TextStyle(
-      color: textSwatch.shade500,
-      fontFamily: 'Nunito',
-    ),
-    bodyLarge: TextStyle(
-      color: textSwatch.shade700,
-      fontFamily: 'Nunito',
-    ),
-    bodyMedium: TextStyle(
-      color: textSwatch.shade600,
-      fontFamily: 'Nunito',
-    ),
-    bodySmall: TextStyle(
-      color: textSwatch.shade500,
-      fontFamily: 'Nunito',
-    ),
-    labelLarge: TextStyle(
-      color: textSwatch.shade700,
-      fontFamily: 'Nunito',
-    ),
-    labelMedium: TextStyle(
-      color: textSwatch.shade600,
-      fontFamily: 'Nunito',
-    ),
-    labelSmall: TextStyle(
-      color: textSwatch.shade500,
-      fontFamily: 'Nunito',
-    ),
-  ),
-);
-
-final ThemeData darkTheme = lightTheme.copyWith(
-  colorScheme: darkColorScheme,
-  textTheme: TextTheme(
-    displayLarge: TextStyle(
-      color: textSwatch.shade200,
-      fontFamily: 'Nunito',
-    ),
-    displayMedium: TextStyle(
-      color: textSwatch.shade300,
-      fontFamily: 'Nunito',
-    ),
-    displaySmall: TextStyle(
-      color: textSwatch.shade400,
-      fontFamily: 'Nunito',
-    ),
-    headlineLarge: TextStyle(
-      color: textSwatch.shade200,
-      fontFamily: 'Nunito',
-    ),
-    headlineMedium: TextStyle(
-      color: textSwatch.shade300,
-      fontFamily: 'Nunito',
-    ),
-    headlineSmall: TextStyle(
-      color: textSwatch.shade400,
-      fontFamily: 'Nunito',
-    ),
-    titleLarge: TextStyle(
-      color: textSwatch.shade200,
-      fontFamily: 'Nunito',
-    ),
-    titleMedium: TextStyle(
-      color: textSwatch.shade300,
-      fontFamily: 'Nunito',
-    ),
-    titleSmall: TextStyle(
-      color: textSwatch.shade400,
-      fontFamily: 'Nunito',
-    ),
-    bodyLarge: TextStyle(
-      color: textSwatch.shade200,
-      fontFamily: 'Nunito',
-    ),
-    bodyMedium: TextStyle(
-      color: textSwatch.shade300,
-      fontFamily: 'Nunito',
-    ),
-    bodySmall: TextStyle(
-      color: textSwatch.shade400,
-      fontFamily: 'Nunito',
-    ),
-    labelLarge: TextStyle(
-      color: textSwatch.shade200,
-      fontFamily: 'Nunito',
-    ),
-    labelMedium: TextStyle(
-      color: textSwatch.shade300,
-      fontFamily: 'Nunito',
-    ),
-    labelSmall: TextStyle(
-      color: textSwatch.shade400,
-      fontFamily: 'Nunito',
-    ),
-  ),
-);
diff --git a/lib/cubit/activity_cubit.dart b/lib/cubit/activity_cubit.dart
index e54959e3b969ef0fa8cb271bef47b032424a3542..dacfa6eb4487339f111a9fe056ccffa8dcf0c9d7 100644
--- a/lib/cubit/activity_cubit.dart
+++ b/lib/cubit/activity_cubit.dart
@@ -1,6 +1,5 @@
-import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/models/activity/activity.dart';
 import 'package:midisynth/models/settings/settings_activity.dart';
diff --git a/lib/cubit/nav_cubit_pages.dart b/lib/cubit/nav_cubit_pages.dart
index 5803e81056034223203b23b71206a8592b5b3c8d..9f04bf87ed47d754877b615d3c0216680ada8c35 100644
--- a/lib/cubit/nav_cubit_pages.dart
+++ b/lib/cubit/nav_cubit_pages.dart
@@ -1,4 +1,4 @@
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/activity_page.dart';
 
diff --git a/lib/cubit/nav_cubit_screens.dart b/lib/cubit/nav_cubit_screens.dart
index 42109db7475aae69f545ad7f6fddfe99b2609b72..cb76510d10f189bb84c13d6c0ee12ad8571dbcb4 100644
--- a/lib/cubit/nav_cubit_screens.dart
+++ b/lib/cubit/nav_cubit_screens.dart
@@ -1,4 +1,4 @@
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/screen.dart';
 
diff --git a/lib/cubit/settings_activity_cubit.dart b/lib/cubit/settings_activity_cubit.dart
index 24fa54e3a378b0cbc1a1f41eef02cf1f222c1094..9e9114da5a03e4b9c28f5d50466a229b59003ee5 100644
--- a/lib/cubit/settings_activity_cubit.dart
+++ b/lib/cubit/settings_activity_cubit.dart
@@ -1,6 +1,5 @@
-import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/default_activity_settings.dart';
 import 'package:midisynth/models/settings/settings_activity.dart';
diff --git a/lib/cubit/settings_global_cubit.dart b/lib/cubit/settings_global_cubit.dart
index 5d9883b6d4c8e6f83247702b3a4e7b8135bc2ce9..a29435241f1fc5d5bd14302189940b191fd80cf8 100644
--- a/lib/cubit/settings_global_cubit.dart
+++ b/lib/cubit/settings_global_cubit.dart
@@ -1,6 +1,5 @@
-import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/default_global_settings.dart';
 import 'package:midisynth/models/settings/settings_global.dart';
diff --git a/lib/cubit/theme_cubit.dart b/lib/cubit/theme_cubit.dart
index b793e895dbb0c672d451cd403e0036c3d9ac9b42..1ecab6014c67a0393eabbf704b8b85c9e988705e 100644
--- a/lib/cubit/theme_cubit.dart
+++ b/lib/cubit/theme_cubit.dart
@@ -1,6 +1,5 @@
-import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import 'package:hydrated_bloc/hydrated_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 part 'theme_state.dart';
 
diff --git a/lib/main.dart b/lib/main.dart
index 65ba2e7ff910b15576349605c2a2e07aa103f28a..986bf7ceee679f4bec3fa2e5877df265f4210dca 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,16 +1,11 @@
 import 'dart:io';
 
-import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:hive/hive.dart';
-import 'package:hydrated_bloc/hydrated_bloc.dart';
-import 'package:path_provider/path_provider.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/cubit/activity_cubit.dart';
 import 'package:midisynth/cubit/settings_activity_cubit.dart';
-import 'package:midisynth/config/theme.dart';
 import 'package:midisynth/cubit/nav_cubit_pages.dart';
 import 'package:midisynth/cubit/nav_cubit_screens.dart';
 import 'package:midisynth/cubit/settings_global_cubit.dart';
diff --git a/lib/models/activity/activity.dart b/lib/models/activity/activity.dart
index 13cf7f6e5eaaa0cf4df9091dada8b7ba88e92836..2c6bf2f5fe1e20cc3695ba99a7bdd8f101870733 100644
--- a/lib/models/activity/activity.dart
+++ b/lib/models/activity/activity.dart
@@ -1,7 +1,8 @@
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
+
 import 'package:midisynth/models/data/note.dart';
 import 'package:midisynth/models/settings/settings_activity.dart';
 import 'package:midisynth/models/settings/settings_global.dart';
-import 'package:midisynth/utils/tools.dart';
 
 class Activity {
   Activity({
diff --git a/lib/models/settings/settings_activity.dart b/lib/models/settings/settings_activity.dart
index d17d7066bfad5f7f052c7f909bd719648f5953ca..cea6dbebc56eb175c61716c969580e75560930ef 100644
--- a/lib/models/settings/settings_activity.dart
+++ b/lib/models/settings/settings_activity.dart
@@ -1,5 +1,6 @@
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
+
 import 'package:midisynth/config/default_activity_settings.dart';
-import 'package:midisynth/utils/tools.dart';
 
 class ActivitySettings {
   final String sequenceLength;
diff --git a/lib/models/settings/settings_global.dart b/lib/models/settings/settings_global.dart
index 28d8d6059082eb8f9d4e1f277ec82de9933cc8eb..ae9ed6e82ffaf1d36ff8dd742e8fa90503ca811b 100644
--- a/lib/models/settings/settings_global.dart
+++ b/lib/models/settings/settings_global.dart
@@ -1,5 +1,6 @@
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
+
 import 'package:midisynth/config/default_global_settings.dart';
-import 'package:midisynth/utils/tools.dart';
 
 class GlobalSettings {
   String skin;
diff --git a/lib/ui/helpers/app_titles.dart b/lib/ui/helpers/app_titles.dart
deleted file mode 100644
index b98107b12fabc3114ebfbec994166b588abcf1ad..0000000000000000000000000000000000000000
--- a/lib/ui/helpers/app_titles.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-import 'package:easy_localization/easy_localization.dart';
-import 'package:flutter/material.dart';
-
-class AppHeader extends StatelessWidget {
-  const AppHeader({super.key, required this.text});
-
-  final String text;
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(
-      tr(text),
-      textAlign: TextAlign.start,
-      style: Theme.of(context).textTheme.headlineMedium!.apply(fontWeightDelta: 2),
-    );
-  }
-}
-
-class AppTitle extends StatelessWidget {
-  const AppTitle({super.key, required this.text});
-
-  final String text;
-
-  @override
-  Widget build(BuildContext context) {
-    return Text(
-      tr(text),
-      textAlign: TextAlign.start,
-      style: Theme.of(context).textTheme.titleLarge!.apply(fontWeightDelta: 2),
-    );
-  }
-}
diff --git a/lib/ui/helpers/outlined_text_widget.dart b/lib/ui/helpers/outlined_text_widget.dart
deleted file mode 100644
index 726979e0f712c0fcf842938d2bae0474e736c9cc..0000000000000000000000000000000000000000
--- a/lib/ui/helpers/outlined_text_widget.dart
+++ /dev/null
@@ -1,51 +0,0 @@
-import 'package:flutter/material.dart';
-
-import 'package:midisynth/utils/color_extensions.dart';
-
-class OutlinedText extends StatelessWidget {
-  const OutlinedText({
-    super.key,
-    required this.text,
-    required this.fontSize,
-    required this.textColor,
-    this.outlineColor,
-  });
-
-  final String text;
-  final double fontSize;
-  final Color textColor;
-  final Color? outlineColor;
-
-  @override
-  Widget build(BuildContext context) {
-    final double delta = fontSize / 30;
-
-    return Text(
-      text,
-      style: TextStyle(
-        inherit: true,
-        fontSize: fontSize,
-        fontWeight: FontWeight.w600,
-        color: textColor,
-        shadows: [
-          Shadow(
-            offset: Offset(-delta, -delta),
-            color: outlineColor ?? textColor.darken(),
-          ),
-          Shadow(
-            offset: Offset(delta, -delta),
-            color: outlineColor ?? textColor.darken(),
-          ),
-          Shadow(
-            offset: Offset(delta, delta),
-            color: outlineColor ?? textColor.darken(),
-          ),
-          Shadow(
-            offset: Offset(-delta, delta),
-            color: outlineColor ?? textColor.darken(),
-          ),
-        ],
-      ),
-    );
-  }
-}
diff --git a/lib/ui/helpers/styled_button.dart b/lib/ui/helpers/styled_button.dart
deleted file mode 100644
index 67ccb5d7eb5330a22b2be07ad2b108468a13d7c2..0000000000000000000000000000000000000000
--- a/lib/ui/helpers/styled_button.dart
+++ /dev/null
@@ -1,210 +0,0 @@
-import 'package:auto_size_text/auto_size_text.dart';
-import 'package:flutter/material.dart';
-
-import 'package:midisynth/utils/color_extensions.dart';
-
-class StyledButton extends StatelessWidget {
-  const StyledButton({
-    super.key,
-    required this.color,
-    required this.onPressed,
-    this.onLongPress,
-    required this.child,
-  });
-
-  final Color color;
-  final VoidCallback? onPressed;
-  final VoidCallback? onLongPress;
-  final Widget child;
-
-  factory StyledButton.text({
-    Key? key,
-    required VoidCallback? onPressed,
-    VoidCallback? onLongPress,
-    required String caption,
-    required Color color,
-  }) {
-    final Widget captionWidget = AutoSizeText(
-      caption,
-      maxLines: 1,
-      style: TextStyle(
-        inherit: true,
-        fontWeight: FontWeight.w900,
-        color: color.darken(60),
-        shadows: [
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(2, 2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(2, -2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(-2, 2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(-2, -2),
-          ),
-        ],
-      ),
-    );
-
-    return StyledButton(
-      color: color,
-      onPressed: onPressed,
-      onLongPress: onLongPress,
-      child: captionWidget,
-    );
-  }
-
-  factory StyledButton.icon({
-    Key? key,
-    required VoidCallback? onPressed,
-    VoidCallback? onLongPress,
-    required Icon icon,
-    required Color color,
-    required double iconSize,
-  }) {
-    return StyledButton(
-      color: color,
-      onPressed: onPressed,
-      onLongPress: onLongPress,
-      child: Icon(
-        icon.icon,
-        color: icon.color ?? color.darken(60),
-        size: iconSize,
-        shadows: [
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(2, 2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(2, -2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(-2, 2),
-          ),
-          Shadow(
-            blurRadius: 5.0,
-            color: color.lighten(60),
-            offset: const Offset(-2, -2),
-          ),
-        ],
-      ),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    const double borderWidth = 4;
-    final Color borderColor = color.darken(40);
-    const double borderRadius = 10;
-
-    return Container(
-      margin: const EdgeInsets.all(2),
-      padding: const EdgeInsets.all(2),
-      decoration: BoxDecoration(
-        color: color,
-        border: Border.all(
-          color: borderColor,
-          width: borderWidth,
-        ),
-        borderRadius: BorderRadius.circular(borderRadius),
-      ),
-      child: CustomPaint(
-        painter: StyledButtonPainter(
-          baseColor: color,
-        ),
-        child: MaterialButton(
-          onPressed: onPressed,
-          onLongPress: onLongPress,
-          padding: const EdgeInsets.all(8),
-          materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
-          minWidth: 40,
-          child: child,
-        ),
-      ),
-    );
-  }
-}
-
-class StyledButtonPainter extends CustomPainter {
-  StyledButtonPainter({
-    required this.baseColor,
-  });
-
-  final Color baseColor;
-
-  @override
-  void paint(Canvas canvas, Size size) {
-    final Color lightColor = baseColor.lighten(20);
-    final Color darkColor = baseColor.darken(20);
-
-    final Paint paint = Paint()..style = PaintingStyle.fill;
-
-    const double cornerRadius = 6;
-
-    Path topPath = Path()
-      ..moveTo(cornerRadius, 0)
-      ..lineTo(size.width - cornerRadius, 0)
-      ..arcToPoint(
-        Offset(size.width, cornerRadius),
-        radius: const Radius.circular(cornerRadius),
-      )
-      ..lineTo(size.width, size.height * .35)
-      ..quadraticBezierTo(
-        size.width * .4,
-        size.height * .1,
-        0,
-        size.height * .3,
-      )
-      ..lineTo(0, cornerRadius)
-      ..arcToPoint(
-        const Offset(cornerRadius, 0),
-        radius: const Radius.circular(cornerRadius),
-      );
-
-    Path bottomPath = Path()
-      ..moveTo(cornerRadius, size.height)
-      ..lineTo(size.width - cornerRadius, size.height)
-      ..arcToPoint(
-        Offset(size.width, size.height - cornerRadius),
-        radius: const Radius.circular(cornerRadius),
-        clockwise: false,
-      )
-      ..lineTo(size.width, size.height * .7)
-      ..quadraticBezierTo(
-        size.width * .6,
-        size.height * .9,
-        0,
-        size.height * .7,
-      )
-      ..lineTo(0, size.height - cornerRadius)
-      ..arcToPoint(
-        Offset(cornerRadius, size.height),
-        radius: const Radius.circular(cornerRadius),
-        clockwise: false,
-      );
-
-    paint.color = lightColor;
-    canvas.drawPath(topPath, paint);
-
-    paint.color = darkColor;
-    canvas.drawPath(bottomPath, paint);
-  }
-
-  @override
-  bool shouldRepaint(CustomPainter oldDelegate) => false;
-}
diff --git a/lib/ui/nav/bottom_nav_bar.dart b/lib/ui/nav/bottom_nav_bar.dart
index bf852611ac00b5c0c0c4c173b30b70279f30a45b..16405843ee4de28c4bf04055603134f3d223fdfe 100644
--- a/lib/ui/nav/bottom_nav_bar.dart
+++ b/lib/ui/nav/bottom_nav_bar.dart
@@ -1,6 +1,5 @@
-import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/activity_page.dart';
 import 'package:midisynth/cubit/nav_cubit_pages.dart';
@@ -36,7 +35,7 @@ class BottomNavBar extends StatelessWidget {
 
         return BottomNavigationBar(
           currentIndex: state,
-          onTap: (int index) => context.read<NavCubitPage>().updateIndex(index),
+          onTap: (int index) => BlocProvider.of<NavCubitPage>(context).updateIndex(index),
           type: BottomNavigationBarType.fixed,
           elevation: 0,
           backgroundColor: Colors.transparent,
diff --git a/lib/ui/nav/global_app_bar.dart b/lib/ui/nav/global_app_bar.dart
index 6e1da077af91e0b46bfe19067d4abf37c342eb93..1c513d66adc52465dbf8ab356e49d0bcb809f193 100644
--- a/lib/ui/nav/global_app_bar.dart
+++ b/lib/ui/nav/global_app_bar.dart
@@ -1,10 +1,9 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/screen.dart';
 import 'package:midisynth/cubit/activity_cubit.dart';
 import 'package:midisynth/cubit/nav_cubit_screens.dart';
-import 'package:midisynth/ui/helpers/app_titles.dart';
 
 class GlobalAppBar extends StatelessWidget implements PreferredSizeWidget {
   const GlobalAppBar({super.key});
@@ -21,7 +20,7 @@ class GlobalAppBar extends StatelessWidget implements PreferredSizeWidget {
               // go to Settings page
               menuActions.add(ElevatedButton(
                 onPressed: () {
-                  context.read<NavCubitScreen>().goToSettingsPage();
+                  BlocProvider.of<NavCubitScreen>(context).goToSettingsPage();
                 },
                 style: ElevatedButton.styleFrom(
                   shape: const CircleBorder(),
@@ -32,7 +31,7 @@ class GlobalAppBar extends StatelessWidget implements PreferredSizeWidget {
               // go to About page
               menuActions.add(ElevatedButton(
                 onPressed: () {
-                  context.read<NavCubitScreen>().goToAboutPage();
+                  BlocProvider.of<NavCubitScreen>(context).goToAboutPage();
                 },
                 style: ElevatedButton.styleFrom(
                   shape: const CircleBorder(),
@@ -43,7 +42,7 @@ class GlobalAppBar extends StatelessWidget implements PreferredSizeWidget {
               // back to Home page
               menuActions.add(ElevatedButton(
                 onPressed: () {
-                  context.read<NavCubitScreen>().goToActivityPage();
+                  BlocProvider.of<NavCubitScreen>(context).goToActivityPage();
                 },
                 style: ElevatedButton.styleFrom(
                   shape: const CircleBorder(),
diff --git a/lib/ui/pages/editor.dart b/lib/ui/pages/editor.dart
index 000b752269f15e46274f16dd657d2c92be518352..95eb89270d7cac5f05282e7a4948c2cd997b380e 100644
--- a/lib/ui/pages/editor.dart
+++ b/lib/ui/pages/editor.dart
@@ -1,10 +1,8 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/cubit/activity_cubit.dart';
 import 'package:midisynth/models/activity/activity.dart';
-import 'package:midisynth/ui/helpers/outlined_text_widget.dart';
-import 'package:midisynth/utils/color_extensions.dart';
 
 class PageEditor extends StatelessWidget {
   const PageEditor({super.key});
diff --git a/lib/ui/pages/home.dart b/lib/ui/pages/home.dart
index a31b40a84818b0548205c489e85097127e09b1f6..0d58a14a7d4eccf2fe9b1fa86a95c776f48090dc 100644
--- a/lib/ui/pages/home.dart
+++ b/lib/ui/pages/home.dart
@@ -1,10 +1,8 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/cubit/activity_cubit.dart';
 import 'package:midisynth/models/activity/activity.dart';
-import 'package:midisynth/ui/helpers/outlined_text_widget.dart';
-import 'package:midisynth/utils/color_extensions.dart';
 
 class PageHome extends StatelessWidget {
   const PageHome({super.key});
diff --git a/lib/ui/pages/player.dart b/lib/ui/pages/player.dart
index d35fd7d0d486ccd8811d4ff89c2df14c7003ed7e..4afada7c639aa6819f38132ace4dab41346eb2d6 100644
--- a/lib/ui/pages/player.dart
+++ b/lib/ui/pages/player.dart
@@ -1,10 +1,8 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/cubit/activity_cubit.dart';
 import 'package:midisynth/models/activity/activity.dart';
-import 'package:midisynth/ui/helpers/outlined_text_widget.dart';
-import 'package:midisynth/utils/color_extensions.dart';
 
 class PagePlayer extends StatelessWidget {
   const PagePlayer({super.key});
diff --git a/lib/ui/screens/about.dart b/lib/ui/screens/about.dart
index f3cbaff6195953cc7a9eb17044b3f49e8de44da3..f7a14a9a7e574a7b6f9ed181f38d08ba8c2285fe 100644
--- a/lib/ui/screens/about.dart
+++ b/lib/ui/screens/about.dart
@@ -1,8 +1,5 @@
-import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
-import 'package:package_info_plus/package_info_plus.dart';
-
-import 'package:midisynth/ui/helpers/app_titles.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 class ScreenAbout extends StatelessWidget {
   const ScreenAbout({super.key});
diff --git a/lib/ui/screens/activity.dart b/lib/ui/screens/activity.dart
index e024a7bdcb3d603ae758f367afd6d63db130273e..37176cd7cc1fa70e5649fe608f551020453b51eb 100644
--- a/lib/ui/screens/activity.dart
+++ b/lib/ui/screens/activity.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
+
 import 'package:midisynth/config/activity_page.dart';
 import 'package:midisynth/cubit/nav_cubit_pages.dart';
 
diff --git a/lib/ui/screens/settings.dart b/lib/ui/screens/settings.dart
index 771644362de79ed0cba27f0dfda1482dc5f1304e..a68f23748f7351734169c57699a2ea83e3da4e4f 100644
--- a/lib/ui/screens/settings.dart
+++ b/lib/ui/screens/settings.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
-import 'package:midisynth/ui/helpers/app_titles.dart';
 import 'package:midisynth/ui/settings/settings_form.dart';
 
 class ScreenSettings extends StatelessWidget {
diff --git a/lib/ui/settings/settings_form.dart b/lib/ui/settings/settings_form.dart
index 4a92bf99b557f3b0bc76fced37e0daf9cecc0152..06c7432fd151e26b1b3761a09ca2ab7482b56510 100644
--- a/lib/ui/settings/settings_form.dart
+++ b/lib/ui/settings/settings_form.dart
@@ -1,6 +1,5 @@
-import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
-import 'package:unicons/unicons.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/ui/settings/theme_card.dart';
 
diff --git a/lib/ui/settings/theme_card.dart b/lib/ui/settings/theme_card.dart
index bbf579d5ba60f5a219ff9af4a87df9c7499b9253..711da9269bd51ccb07fcde405dc9895e97234212 100644
--- a/lib/ui/settings/theme_card.dart
+++ b/lib/ui/settings/theme_card.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/cubit/theme_cubit.dart';
 
diff --git a/lib/ui/skeleton.dart b/lib/ui/skeleton.dart
index 82d066f3169198c9a8eddb2782d3ab649a6023ac..d6ccf5e7b056ce4d391cdf0e013506078236cf26 100644
--- a/lib/ui/skeleton.dart
+++ b/lib/ui/skeleton.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_custom_toolbox/flutter_toolbox.dart';
 
 import 'package:midisynth/config/screen.dart';
 import 'package:midisynth/cubit/nav_cubit_screens.dart';
diff --git a/lib/utils/color_extensions.dart b/lib/utils/color_extensions.dart
deleted file mode 100644
index 4e55e338f0d3ed98b233d1ef887b7b3e17e29d97..0000000000000000000000000000000000000000
--- a/lib/utils/color_extensions.dart
+++ /dev/null
@@ -1,33 +0,0 @@
-import 'dart:ui';
-
-extension ColorExtension on Color {
-  Color darken([int percent = 40]) {
-    assert(1 <= percent && percent <= 100);
-    final value = 1 - percent / 100;
-    return Color.fromARGB(
-      alpha,
-      (red * value).round(),
-      (green * value).round(),
-      (blue * value).round(),
-    );
-  }
-
-  Color lighten([int percent = 40]) {
-    assert(1 <= percent && percent <= 100);
-    final value = percent / 100;
-    return Color.fromARGB(
-      alpha,
-      (red + ((255 - red) * value)).round(),
-      (green + ((255 - green) * value)).round(),
-      (blue + ((255 - blue) * value)).round(),
-    );
-  }
-
-  Color avg(Color other) {
-    final red = (this.red + other.red) ~/ 2;
-    final green = (this.green + other.green) ~/ 2;
-    final blue = (this.blue + other.blue) ~/ 2;
-    final alpha = (this.alpha + other.alpha) ~/ 2;
-    return Color.fromARGB(alpha, red, green, blue);
-  }
-}
diff --git a/lib/utils/tools.dart b/lib/utils/tools.dart
deleted file mode 100644
index fd48b2b009b80b22248d6e7f08a63e96c4065bd7..0000000000000000000000000000000000000000
--- a/lib/utils/tools.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-import 'package:flutter/foundation.dart';
-
-void printlog(String message) {
-  if (!kReleaseMode) {
-    debugPrint(message);
-  }
-}
diff --git a/pubspec.lock b/pubspec.lock
index 229631c1f86719287b9acdfad6debc0e9f46254d..add98fbfa6f448021ae70f955575f581ab0753d9 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -5,20 +5,20 @@ packages:
     dependency: transitive
     description:
       name: args
-      sha256: "7cf60b9f0cc88203c5a190b4cd62a99feea42759a7fa695010eb5de1c0b2252a"
+      sha256: bf9f5caeea8d8fe6721a9c358dd8a5c1947b27f1cfaa18b39c301273594919e6
       url: "https://pub.dev"
     source: hosted
-    version: "2.5.0"
+    version: "2.6.0"
   async:
     dependency: transitive
     description:
       name: async
-      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
       url: "https://pub.dev"
     source: hosted
-    version: "2.11.0"
+    version: "2.12.0"
   auto_size_text:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: auto_size_text
       sha256: "3f5261cd3fb5f2a9ab4e2fc3fba84fd9fcaac8821f20a1d4e71f557521b22599"
@@ -61,12 +61,12 @@ packages:
     dependency: transitive
     description:
       name: crypto
-      sha256: ec30d999af904f33454ba22ed9a86162b35e52b44ac4807d1d93c288041d7d27
+      sha256: "1e445881f28f22d6140f181e07737b22f1e099a5e1ff94b0af2f9e4a463f4855"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.6"
   easy_localization:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: easy_localization
       sha256: fa59bcdbbb911a764aa6acf96bbb6fa7a5cf8234354fc45ec1a43a0349ef0201
@@ -82,7 +82,7 @@ packages:
     source: hosted
     version: "0.0.2"
   equatable:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: equatable
       sha256: c2b87cb7756efdf69892005af546c56c0b5037f54d2a88269b4f347a505e3ca2
@@ -111,13 +111,22 @@ packages:
     source: sdk
     version: "0.0.0"
   flutter_bloc:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: flutter_bloc
       sha256: b594505eac31a0518bdcb4b5b79573b8d9117b193cc80cc12e17d639b10aa27a
       url: "https://pub.dev"
     source: hosted
     version: "8.1.6"
+  flutter_custom_toolbox:
+    dependency: "direct main"
+    description:
+      path: "."
+      ref: "0.1.1"
+      resolved-ref: ba7137ca9edec7e503ed3dbfe7f6ede7e9cfbf4d
+      url: "https://git.harrault.fr/android/flutter-toolbox.git"
+    source: git
+    version: "0.1.1"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -137,7 +146,7 @@ packages:
     source: sdk
     version: "0.0.0"
   hive:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: hive
       sha256: "8dcf6db979d7933da8217edcec84e9df1bdb4e4edc7fc77dbd5aa74356d6d941"
@@ -161,7 +170,7 @@ packages:
     source: hosted
     version: "4.0.2"
   hydrated_bloc:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: hydrated_bloc
       sha256: af35b357739fe41728df10bec03aad422cdc725a1e702e03af9d2a41ea05160c
@@ -209,13 +218,13 @@ packages:
     source: hosted
     version: "1.0.0"
   package_info_plus:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: package_info_plus
-      sha256: "894f37107424311bdae3e476552229476777b8752c5a2a2369c0cb9a2d5442ef"
+      sha256: df3eb3e0aed5c1107bb0fdb80a8e82e778114958b1c5ac5644fb1ac9cae8a998
       url: "https://pub.dev"
     source: hosted
-    version: "8.0.3"
+    version: "8.1.0"
   package_info_plus_platform_interface:
     dependency: transitive
     description:
@@ -233,7 +242,7 @@ packages:
     source: hosted
     version: "1.9.0"
   path_provider:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: path_provider
       sha256: fec0d61223fba3154d87759e3cc27fe2c8dc498f6386c6d6fc80d1afdd1bf378
@@ -284,10 +293,10 @@ packages:
     dependency: transitive
     description:
       name: platform
-      sha256: "9b71283fc13df574056616011fb138fd3b793ea47cc509c189a6c3fa5f8a1a65"
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.5"
+    version: "3.1.6"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -377,10 +386,10 @@ packages:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "688af5ed3402a4bde5b3a6c15fd768dbf2621a614950b17f04626c431ab3c4c3"
+      sha256: "0bd04f5bb74fcd6ff0606a888a30e917af9bd52820b178eaa464beb11dca84b6"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.4.0"
   synchronized:
     dependency: transitive
     description:
@@ -401,12 +410,12 @@ packages:
     dependency: transitive
     description:
       name: typed_data
-      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.2"
+    version: "1.4.0"
   unicons:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: unicons
       sha256: f3eab9d87c226415ef857cfd2167e1d12ad81ea1f5783b46cf644224fea4eab7
@@ -433,10 +442,10 @@ packages:
     dependency: transitive
     description:
       name: win32
-      sha256: "4d45dc9069dba4619dc0ebd93c7cec5e66d8482cb625a370ac806dcc8165f2ec"
+      sha256: "2735daae5150e8b1dfeb3eb0544b4d3af0061e9e82cef063adcd583bdae4306a"
       url: "https://pub.dev"
     source: hosted
-    version: "5.5.5"
+    version: "5.7.0"
   xdg_directories:
     dependency: transitive
     description:
@@ -446,5 +455,5 @@ packages:
     source: hosted
     version: "1.1.0"
 sdks:
-  dart: ">=3.5.0 <4.0.0"
+  dart: ">=3.5.3 <4.0.0"
   flutter: ">=3.24.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 9ca8c6f37e82066a65ee80b6ef7405c95ed8a53a..e5a5bbee4eb61d4f0759c3bce397e87e1bbf844a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,7 +3,7 @@ description: MIDI Synth
 
 publish_to: "none"
 
-version: 0.1.1+13
+version: 0.2.0+14
 
 environment:
   sdk: "^3.0.0"
@@ -13,15 +13,10 @@ dependencies:
     sdk: flutter
 
   # base
-  auto_size_text: ^3.0.0
-  easy_localization: ^3.0.1
-  equatable: ^2.0.5
-  flutter_bloc: ^8.1.1
-  hive: ^2.2.3
-  hydrated_bloc: ^9.0.0
-  package_info_plus: ^8.0.0
-  path_provider: ^2.0.11
-  unicons: ^3.0.0
+  flutter_custom_toolbox:
+    git:
+      url: https://git.harrault.fr/android/flutter-toolbox.git
+      ref: 0.1.1
 
   # specific
   # (none)
@@ -33,15 +28,3 @@ flutter:
   uses-material-design: true
   assets:
     - assets/translations/
-
-  fonts:
-    - family: Nunito
-      fonts:
-        - asset: assets/fonts/Nunito-Bold.ttf
-          weight: 700
-        - asset: assets/fonts/Nunito-Medium.ttf
-          weight: 500
-        - asset: assets/fonts/Nunito-Regular.ttf
-          weight: 400
-        - asset: assets/fonts/Nunito-Light.ttf
-          weight: 300