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Fitness App Development Agency
Workout products, coaching, subscriptions, and HealthKit — built to retain past week two.
Fitness apps die on retention, not on whether you can show a timer. Streaks, programs, and a reason to open the app on a rainy Tuesday matter more than a 3D avatar in v1.
We ship workout and habit products with store subscriptions done correctly. RevenueCat, HealthKit, and Google Fit are in the plan when they belong — not bolted on after review rejects you.
Timeline: 3–4 weeksPrice: From $3,460Fixed price — no hourly billing
Why fitness app development is easy to get wrong
Most fitness apps lose the majority of users in the first month without a habit loop
Store subscriptions are a specialist skill — freelancers often get receipt validation wrong
HealthKit / Health Connect scope is underestimated
Trainer marketplaces try to be Peloton + Mindbody in week one
What we build
Programs and logging
Workouts, sets, completion, and history a user can trust.
Paywall that is legal
Trials, restore purchases, and store-compliant copy.
Coach or admin tools
When a human assigns programs — not only a content dump.
Wearable reads
Steps, workouts, or heart rate when they change the product — not as decoration.
Typical features in v1
Subscriptions
RevenueCat as the default for iOS and Android IAP.
Habit UX
Reminders, streaks, and empty states designed, not leftover.
Development process
1
Scoping call
30 minutes. We lock the v1 loop, platforms, and a fixed price.
2
Design sprint
Days 1–5. Core screens and data model. You approve before heavy build.
3
Build sprint
Days 6–18. Daily Slack updates. Scope cuts happen in the open.
4
Launch & handoff
QA, deploy or store submission, repo access, two weeks of fixes.
Recommended stack
- React Native + Expo — Mobile clients
- RevenueCat — Store subscriptions
- Supabase — Users, programs, logs
- HealthKit / Health Connect — Optional health data
What you get
- → iOS + Android app
- → Workout + progress tracking
- → RevenueCat subscriptions
- → Coach dashboard when needed
- → Full source code
Relevant work — fitness app development
Production products we shipped. Metrics come from those projects — we do not invent case studies for this page.
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Planning resources
FAQ
How much does fitness app development cost?
A core fitness MVP starts at $3,460. AI coaching, social feed, and deep wearable graphs are extra scope we price before kickoff.
Do you handle App Store subscriptions?
Yes. RevenueCat is standard. We do not 'figure out StoreKit' in week three.
Can this replace Mindbody?
For a single brand, often yes. For a full marketplace of gyms, that is a different product — see coaching and booking pages.
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Start your MVP
Free 30-min scoping call. Fixed price quote after we write the v1 list.
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