Pulse Fitness
A cross-platform iOS and Android subscription training application featuring curated video workouts, workout streaks, and Apple Health / Google Fit telemetry.
Where the Product Was Stuck
The founders had an incredible training curriculum but struggled with high mobile churn. Previous prototype apps suffered from stuttering video playback, laggy timers, and failed background audio while running.
Architectural Approach
We built a native-feel React Native app with custom audio mixing, background timer services, offline video caching, and motivational streak gamification that keep members returning daily.
Key Engineering Decisions
Custom audio pipeline allowing simultaneous workout trainer cues over Spotify audio
Bi-directional Apple HealthKit and Google Health Connect telemetry syncing
Offline video downloads with encrypted local caching for gym environments
In-App Subscriptions integrated with StoreKit 2 and Google Play Billing