Premium Productivity Asset

21 Days Challenge

The Ultimate Offline Habit Tracker. Built with Material 3 & MVVM Architecture.

✓ Android 15 Ready ✓ AdMob Integrated ✓ Clean Kotlin Code

Transform Your Users’ Lives

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.

Visual Progress

Stunning 21-day progress grids that motivate users to maintain their streaks and never break the chain.

Offline First

Uses Room Database for local storage. Data stays on the device, ensuring ultra-fast speed and privacy.

Monetization

AdMob Banner and Interstitial ads are fully integrated. Just replace your Ad IDs and start earning.

High-End Technical Specs

Programming 100% Kotlin (Modern) Architecture MVVM & LiveData Database Room Persistence Design Material UI 3 COMPLETE PACKAGE

What You Will Get

• ✔ Full Android Studio Source Code (Kotlin)
• ✔ Detailed Documentation for Setup & Publishing
• ✔ Ready-to-use Icon Assets & Graphics
• ✔ Clean, Error-Free & Commented Code

Need Customization or Help?

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 APP