FitTrack Pro
Cross-platform mobile app for workout tracking, nutrition logging, and community challenges.
What is FitTrack Pro?
Cross-platform mobile app for workout tracking, nutrition logging, and community challenges.
The problem we solved.
The client wanted to compete in the crowded fitness app market with one differentiator: genuine social accountability. Existing apps had community features bolted on as afterthoughts. They wanted challenges to be a core part of the product loop — not a tab buried in settings.
How we tackled it.
We designed the app with challenges at the centre of navigation. Every workout logged contributes to ongoing team challenges, making each individual action feel connected to a community outcome. Offline-first architecture was the hardest technical problem — users need the app to work perfectly in a gym with no signal.
What we built.
FitTrack Pro uses Expo for the cross-platform layer and Reanimated 3 for silky 60fps workout animations. All workout data is persisted locally first and synced to Supabase in the background. Challenge leaderboards update in real time via Supabase Realtime subscriptions when connectivity is available.
What FitTrack Pro does.
Interface preview.
Upload real screenshots via Sanity CMS -> Gallery field
How it's built.
React Native with Expo, local SQLite via expo-sqlite for offline storage, Supabase for auth and real-time subscriptions. Reanimated 3 drives workout timer animations. Push notifications via Expo Notifications for challenge milestones and rest reminders.
Stack used.
Outcomes & impact.
App Store rating of 4.8 after 200 reviews. Day-7 retention of 42% — significantly above the 25% fitness app industry average. Community challenges is the top-cited reason for continued use in app store reviews.
Data Insight→
AI / SaaS
Want to build something like FitTrack Pro?
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