A free, no-nonsense Android app for building productive habits through a 21-day challenge.
Psychological research suggests that it takes approximately 21 days to form a new habit. Yet, most habit trackers and challenge-monitoring apps lock this simple concept behind expensive paywalls.
Something as fundamental as building good habits should not require a monthly subscription. You shouldn't have to pay to become a better version of yourself.
This app was built with a simple belief: a tool that helps people grow should be free and accessible to everyone. No ads. No subscriptions. No data harvesting. Just a clean, focused experience that helps you build lasting habits — one day at a time.
The philosophy behind 21DayForge draws from the Bhagavad Gita, which teaches that self-discipline, consistency, and detachment from results are the pillars of personal growth. As Krishna says:
"योगः कर्मसु कौशलम्" — Excellence in action is Yoga.
This app embodies that principle — showing up every day, putting in the work, and trusting the process.
Get the latest APK from the Releases page.
- Download the latest
21DayForge.apkfrom Releases - On your Android device, enable Install from unknown sources (Settings → Security → Unknown sources)
- Open the downloaded APK and tap Install
- Launch 21DayForge from your app drawer
Note: This app is not distributed through the Google Play Store. You must install it manually (sideloading).
If you prefer to build the APK yourself:
- Install Flutter
- Clone this repository:
git clone git@github.com:chinmayrozekar/21DayForge_Android.git cd 21DayForge_Android - Build the release APK:
flutter build apk --release
- Find the APK at
build/app/outputs/flutter-apk/app-release.apk
- 21-day habit challenge tracking
- Local data storage (no account required)
- Daily notifications to stay on track
- Profile customization
- Framework: Flutter
- State Management: Riverpod
- Local Storage: Hive
- Notifications: flutter_local_notifications
This project is available for free personal use.