Members using a third-party app to track their workouts and log their progress, with no connection to your gym or your coaches -- so when they cancel, they take their data and their engagement somewhere else?
Class booking working fine in person but members dropping out of classes at higher rates because there is no app reminder, no pre-class motivation, and no friction to cancelling?
Fitness App Development
Fitness brands that gave members a digital touchpoint -- workout logging, class booking, progress tracking -- retain those members significantly longer than brands whose only touchpoint is the gym floor, because the app extends the relationship to every day of the week, not just the days the member visits.
We build fitness apps for gyms, studios, and fitness brands where workout tracking, class booking, coaching programme delivery, and wearable data are part of a single member experience under your brand -- not scattered across three third-party apps with no connection to your business.
Workout logging and programme delivery
Class booking with reminders
Wearable and Apple Health integration
Progress analytics and coach dashboard
A custom fitness app gives gyms, studios, and fitness brands a direct digital relationship with their members -- workout logging, coach-assigned programme delivery, in-app class booking, wearable and Apple Health integration, and progress analytics in a single app under the brand's name. Members who engage with a fitness app from their gym cancel at significantly lower rates than members whose only touchpoint is the gym floor, because the app extends the relationship beyond the physical visit. RaftLabs builds fitness apps for iOS and Android covering workout tracking and programme delivery, class booking with push reminders, wearable integration including Apple Health, Google Fit, Garmin, and Whoop, progress analytics, coach dashboards, and community features. Most projects ship in 12 to 16 weeks at a fixed cost with full source code ownership.
iOS + AndroidCross-platform
·WearableIntegration
·FixedCost delivery
·12-16Week delivery cycles
Fitness apps built to increase member retention, not just track workouts
A fitness app is a retention tool before it is a feature. The relationship between digital engagement and membership retention is well-documented in the fitness sector: members who log workouts, follow coach-assigned programmes, or book classes through an app cancel at lower rates than members who interact with the gym only through the front desk or a generic booking link. The mechanism is straightforward -- an app creates a daily touchpoint that is independent of physical attendance. A member who opens the app to log a home workout or check their programme for the week is maintaining an active relationship with the gym on days they are not on the floor.
The difference between an app that gets used daily and one that gets downloaded and forgotten is specificity. A generic workout logger has no connection to the gym, the coaches, or the class timetable. A custom fitness app under the gym's brand delivers the coach's actual programme, shows the gym's actual class schedule, connects to the member's wearable data, and surfaces progress in the context of goals the member set with their coach. That specificity is what keeps the app open. Building it requires decisions about which features serve the members who are most likely to churn -- not a feature list assembled from what every fitness app has.
What we build
Workout tracking and programme delivery
Workout logging with an exercise library covering sets, reps, weight, and rest time per set. Coach-assigned training programmes delivered through the app with exercise demonstration videos and coaching cues for each movement. Programme progression with automatic weight or volume adjustments based on the member's logged performance data -- the next session's targets update based on what was completed in the previous one. Workout history and personal record tracking per exercise so the member can see their progress on each lift over time without keeping a separate log. Programme adherence visible to the coach alongside the member's logged sessions.
Class booking and schedule
In-app class booking linked to the gym's timetable with real-time availability. Booking confirmation notification sent immediately after a class is reserved. Pre-class reminder push notification sent at a configurable interval before the session starts -- a morning reminder for an evening class, a 30-minute reminder for a lunchtime session. Easy cancellation within the app with a configurable cutoff time that frees the spot for waitlist promotion when the cutoff passes. Favourite class and instructor saving for quick rebooking of regularly attended sessions. Attendance history in the member profile showing classes attended, classes cancelled, and no-shows over time.
Wearable and health platform integration
Apple Health and Google Fit integration for activity data, heart rate, and calorie burn, synced to the member's app profile after each workout. Garmin, Polar, Whoop, and Fitbit API connections for members using dedicated sports wearables, pulling detailed biometric data including heart rate variability, sleep, and recovery scores where the device API provides them. Workout data from the wearable synced to the member's training log so a run or a cycle completed outside the gym is captured in the same profile as a gym session. Heart rate zone analysis for workouts performed at the gym or outdoors, shown alongside the member's logged effort and the coach's programme targets.
Progress analytics and goal tracking
Member-facing progress dashboard showing body measurements over time, strength progress per exercise plotted as a trend, class attendance streak, and workout frequency by week and month. Goal setting at the start of a programme with milestone notifications when a target is reached -- a personal record on a key lift, a streak milestone, or a measurement target. Progress photos with a date-comparison view so the member can place images side by side across a defined time period. Sharing options for progress milestones posted to the in-app community feed or exported to the member's camera roll, which drives organic social sharing tied to the gym's brand.
Coach and trainer tools
Coach dashboard showing programme adherence and workout data for each assigned member -- what was completed, what was skipped, and how logged weights compare to programme targets. Direct message thread per client within the app for coaching communication, form feedback, and programme questions. Programme creation interface with an exercise library, video attachment per exercise, and scheduling across the programme duration. Session notes per client visible to the full coaching team so a member working with more than one trainer has continuity across sessions. Group programme broadcast to a cohort of members for gym-wide challenges or group coaching cycles.
Community and engagement features
In-app community feed for member check-ins, workout posts, and gym announcements managed from the admin dashboard. Challenge creation with leaderboards -- class attendance streaks, total weight lifted across the month, or most workouts completed -- with a configurable duration and a prize or recognition mechanic. Reaction and comment on community posts to create peer engagement between members. Push notification for gym news, new class schedules, promotional offers, and challenge updates. Member referral tracking with reward integration so members who refer a joining friend receive a credit or benefit automatically, without front desk tracking of who referred whom.
Frequently asked questions
Yes. We build cross-platform using React Native, which produces native iOS and Android apps from a single codebase. This is the standard approach for fitness apps targeting both platforms because it reduces development cost and ensures feature parity -- a coach programme delivered on iOS is identical to the one delivered on Android, and wearable integrations work consistently across both. We publish to the App Store and Google Play as part of the delivery scope. If you have an existing iOS app and need an Android version, or vice versa, we can scope a cross-platform rebuild that preserves the existing feature set.
Platform tools like Mindbody and Glofox are built for class booking and membership billing -- they are not built to be the daily fitness companion for a member. A custom fitness app sits on the member's phone and is the primary interface for their workout data, their coaching programme, their progress tracking, and their gym relationship. A custom app runs under your gym's brand name in the App Store, not under the platform's brand. Wearable integration, coach programme delivery, custom community features, and progress analytics are built to your specification rather than constrained by the platform's roadmap. The business case for a custom app is member retention: an app that members open daily for their workout log and programme creates a retention mechanism that a booking platform does not.
Yes. The fitness app is typically built as the member-facing layer on top of the gym management system -- class timetable, booking availability, and membership status are pulled from the management system via API so there is one source of data for both the admin dashboard and the member app. If you have an existing gym management system with an open API, we connect the app to it during the build. If your management system is a closed platform with no API access, we scope an integration approach based on what data the platform exposes. In cases where the management system cannot be integrated, we scope a lightweight management layer as part of the app build to handle the data the app needs.
A fitness app covering workout tracking and programme delivery, class booking with notifications, wearable integration, progress analytics, a coach dashboard, and community features falls within our fixed-cost delivery model. The scope factors that affect cost are the number of wearable platforms being integrated, whether the app connects to an existing gym management system or needs a management layer built alongside it, the depth of the community and engagement features, and whether a white-label app or a fully custom design is required. We scope every project before pricing -- a scoping session covers your member engagement goals, current tools, and the features that will have the most impact on retention. Fixed cost and timeline are agreed before development starts. Most projects in this scope ship in 12 to 16 weeks.
Tell us what your members currently use to track their fitness, what's missing from that experience, and what you want the app to do for retention. We will scope a build around your member engagement goals.
