We built FastHabit, a native iOS and Android app that helps people start intermittent fasting and keep it up. Users set a fast length, follow their progress live and log every day. The app also covers reminders, weight tracking, calendar and weekly views, streaks, multi-day fasts and data export.

On iOS, the experience goes beyond the phone. We built Apple Watch support so users can track fasts from the wrist without their iPhone. We also added home screen widgets and watch face complications, and synced data across devices through iCloud and Apple HealthKit. On Android, we delivered the same core features with Kotlin and Jetpack Compose, using background reminders and secure local storage. Both apps include in-app subscriptions, crash monitoring and product analytics.