FitPulse
Native iPhone & Apple Watch fitness tracker with activity rings, workouts and HealthKit sync.
A fitness studio wanted members to keep training — and stay subscribed — between sessions.
A SwiftUI app with HealthKit, Apple Watch companion, guided workouts, streaks and in-app subscriptions.
We built the Watch experience first so a workout records itself even when the phone is left in a gym bag, and pushed everything through HealthKit so members keep the rings and history they already trust. Guided workouts use haptics and one-handed layouts because a gym floor is not a desk. Subscriptions run through StoreKit with a free trial, and streak logic was tuned against the weeks where the studio's own retention actually dropped rather than copied from another app.
- Native SwiftUI iPhone app
- Apple Watch companion workout mode
- Two-way HealthKit sync
- StoreKit subscription with trial
Members kept training between booked sessions, which is the exact moment a studio subscription usually churns. Store reviews focus on the Watch sync working reliably — the feature most likely to be quietly abandoned in a cheaper build. Recurring revenue turned predictable through StoreKit, and the studio stopped chasing renewal payments over WhatsApp.