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Mobile & FitnessLIVE
FITPLAN
Training programs for two million athletes, in their pocket.
Fitness app at scale. 2M+ users, 100+ workout programs, wearable sync, social features. Built with React Native for iOS and Android. Serverless backend with GraphQL API. High-performance data layer.
- Client
- Fitplan
- Role
- React Native Engineer
CLIENT WORK
- 2M+
- Users
- 100+
- Workout programs
- 2
- Platforms, one codebase
The Challenge
Two million users training against a catalog of 100+ programs, on two platforms, with wearable data streaming in — at that scale, sluggish lists and sync bugs aren't papercuts, they're churn. The engineering bar was set by the user count.
The Solution
Contributed senior React Native engineering across the app: one codebase for iOS and Android, a serverless GraphQL API that scales elastically, and a high-performance data layer tuned so browsing programs and syncing wearables stays instant under load.
The Outcome
The app serves its multi-million-user base in production at fitplanapp.com, with the social and wearable features running as core parts of the training experience.
Highlights
- Single React Native codebase shipping to both iOS and Android
- Serverless GraphQL backend scales with demand instead of with a server bill
- Wearable sync brings workout and health data into the training loop
- High-performance data layer keeps program browsing smooth at catalog scale
Technology
React NativeGraphQLServerless
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