I’m ready to release a straightforward offer-wall earning application on Android and need someone who has already built this kind of system before. The app’s core loop is simple: users complete surveys, watch ads, or make small in-app purchases and are rewarded with points that are stored against their profile. What I need built • Rewards points system that instantly credits points for three earning channels—completed surveys, rewarded ads, and verified in-app purchases—and shows the live balance on every screen. • User profile management with secure sign-in (e-mail, Google, or similar), avatar, and a running history of earned points. All data must sync to the cloud so users keep their balance if they reinstall. Preferred stack Native Android (Android Studio). Kotlin is ideal, Java is fine. You can propose Firebase, Supabase, or another lightweight backend as long as authentication, realtime updates, and basic analytics are covered. Deliverables 1. Full, well-commented source code and Android Studio project 2. Debug and release APKs ready for Play Store testing 3. Brief setup guide so I can swap ad networks or survey providers later 4. One post-handover bug-fix cycle Acceptance criteria • Completing at least one survey, one ad view, and one in-app purchase each adds the correct number of points without restarting the app. • Profile and points persist after logout, app restart, and reinstall. • The app passes Play Console pre-launch review with no critical crashes. If you have a live or past rewards app, a quick screenshot or store link will move you to the top of the list.