Mobile App Development for Fitness Tracking
Health & Wellness Startup
A wellness startup wanted to launch a fitness-tracking app on both platforms at once, with real-time tracking and the social hooks that drive retention. Bricksense designed and built it end to end.
The Challenge
The team needed iOS and Android at parity on a startup budget and timeline, with accurate real-time activity tracking that did not drain the battery.
Retention in fitness apps is notoriously poor; the product needed social accountability features to keep people coming back past week two.
Our Approach
Cross-platform build
A shared React Native codebase with native modules where sensor and background-tracking performance demanded it.
Efficient tracking
Batched location and motion sampling tuned for accuracy per battery percent, validated against reference devices.
Social layer
Friends, challenges, activity feed, and streaks designed to create gentle accountability without noise.
Instrumented launch
Analytics and an A/B framework in place from day one to learn what drove retention.
The Solution
The app tracks runs, rides, and workouts in real time with maps and live stats, syncs with popular wearables, and puts friends and challenges one tap away.
Streaks and group challenges turned out to be the retention lever; the team now iterates on them with real data.
What We Delivered
- iOS and Android apps from one codebase
- Real-time GPS and motion tracking with wearable sync
- Social features: friends, challenges, feed, streaks
- Analytics and experimentation framework
- App Store and Play Store launch support
The Results
The app passed 100,000 downloads within months of launch and holds 50,000 monthly active users at a 4.8-star rating across both stores.
Sessions per user rose 65% after the social features shipped, confirming the accountability thesis the product was built on.
One team, both platforms, launched on time. The social features are what people stay for, and the ratings show it.