The Ultimate Offline Habit Tracker. Built with Material 3 & MVVM Architecture.
✓ Android 15 Ready ✓ AdMob Integrated ✓ Clean Kotlin Code | |
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The 21 Days Challenge app is a meticulously crafted habit-building tool designed to help users achieve their goals through consistency. This is a complete, ready-to-publish source code that combines psychological principles of habit formation with world-class Android development.
Stunning 21-day progress grids that motivate users to maintain their streaks and never break the chain.
Uses Room Database for local storage. Data stays on the device, ensuring ultra-fast speed and privacy.
AdMob Banner and Interstitial ads are fully integrated. Just replace your Ad IDs and start earning.
Our team is dedicated to your success. Reach out for any technical support.
inficomui@gmail.com“Empowering developers to build beautiful apps faster.”
© 2026 INFI TECH STUDIO • 21 DAYS CHALLENGE APP0 average based on 0 ratings.
| Last Update | 2026-02-24 |
| Created | 2026-02-24 |
| Sales | 0 |
| Discussion | Comments |
| Software Version | Android 15.0 Android 12.0 Android 11.0 Android 10.0 Android 9.0 |
| Files Included | .apk .xml Layered PNG CSS HTML |
| Video Preview Resolution |