Fitness & WellbeingFitness App Development Services
Workout tracking, coaching platforms, gym management software and wearable integration, built around the one metric that decides a fitness product: whether people come back.
TRUSTED BY TEAMS
Sodio builds fitness app development services covering workout and nutrition tracking, personal trainer platforms, gym management software, live class streaming and wearable integration with Apple HealthKit, Google Health Connect, Fitbit, Garmin and Strava.
Fitness products are judged on retention rather than features. Most lose users to logging friction, static training plans that ignore actual progress, and disengagement that is only noticed after the subscription is cancelled. We build around those three problems.
/// SUMMARY
Fitness Products Are Won on Retention
Retention Is the Real Product Problem
Almost every fitness product has the same shape of problem. Acquisition works. January is busy. By March the daily actives have collapsed, and the feature roadmap does not fix it because the problem is not missing features.
Friction Kills Week-Four Retention
The first cause is friction. Every manual log, every field a user fills in after a workout, is a reason to stop. Automatic rep counting, photo-based food logging and passive wearable sync exist to remove those moments, and each one removed shows up in week-four retention.
Static Plans Quickly Lose Relevance
The second is relevance. A static twelve-week plan stops matching the user in week three, when they miss sessions, plateau or pick up an injury. Plans that adapt to what actually happened keep people in; plans that ignore it become something to feel guilty about.
Churn Starts Before Cancellation
The third is timing. By the time someone cancels, the decision was made weeks earlier. Churn models that flag disengagement early give you a window to intervene while the user is still there.
Build Around the Metrics That Matter
We build for those three, because they are what the business is measured on.
/// FITNESS SOLUTIONS
Fitness and Wellbeing Software We Build
Fitness App Development
Meditation & Mindfulness Apps
Personal Trainer App Development
Fitness Tracker App Development
Gym Management Software
Workout & Training Plan Platforms
Nutrition & Diet Tracking Apps
Corporate Wellness Platforms
Fitness Wearable Integration
Live & On-Demand Fitness Streaming
Sports & Athlete Performance
/// PLATFORMS & INTEGRATIONS
Platforms and Systems We Work With
/// HOW WE WORK
How We Work on Fitness Projects
Retention audit or product discovery
For an existing product we look at where users drop out and what the data says about why. For a new product we map the user journey, the logging burden and the integrations it will depend on.
Free solution architecture
Components, wearable integrations, streaming approach if needed, AI feasibility and a costed delivery plan including ongoing running cost. Yours to keep whether or not you build with us.
MVP in 30 days
A working MVP on the core loop first, not the full feature list. Wearable partner approvals and app store review are flagged before starting where they apply.
Production build in 90 days
Core build with subscription billing, analytics instrumentation and agreed integrations. Streaming and AI features are usually phased in after the core loop is retaining users.
/// FAQ
Frequently Asked Questions
A focused MVP with workout tracking, user accounts and basic progress history is a smaller build than most founders expect. Costs rise with live video streaming, wearable integrations, AI features and payment infrastructure, and ongoing costs include app store fees, streaming bandwidth and any model inference. We give a costed breakdown during the free solution architecture rather than a range that means nothing.
Apple HealthKit, Google Health Connect, Fitbit Web API, Garmin Connect, Whoop, Polar and Strava. Each exposes different data at different granularity, and some require partner approval before production access. We establish what is actually available for your use case during discovery, because assuming API parity across platforms is a common and expensive mistake.
Yes. Pose estimation models track body keypoints from the camera feed and compare joint angles against correct movement patterns. It works well for compound movements with clear form markers and less well where the camera angle hides the relevant joint. Running the model on-device keeps latency low enough for real-time feedback and means video never leaves the phone, which matters for both privacy and cost.
Retention is an engineering problem as much as a content one. The measurable levers are reducing logging friction, personalising the next session rather than serving a static plan, and identifying disengagement early enough to intervene. Churn models that flag at-risk users weeks before they lapse are more useful than an exit survey, because at that point the decision is already made.
Both. Consumer apps are subscription products where retention and onboarding decide the business. Gym and studio software is operational: membership, access control, class scheduling, trainer rosters and billing, often integrating with door hardware and payment providers. The engineering discipline is shared, but the buyer and the success measure are entirely different.
For a defined scope we target a working MVP in 30 days and a core production build in 90. Live video streaming, wearable partner approvals and app store review can extend that. We flag which apply to your project during the solution architecture rather than discovering them in month two.
/// RELATED INDUSTRIES & SERVICES
Related Industries and Services
Internal linking. Routes visitors to the correct page where scope overlaps.
/// GET STARTED
Start With the Retention Problem
Tell us where your users drop out, or what you are planning to build. We will prepare a free solution architecture covering the core loop, integrations, AI feasibility and delivery phases, so you can judge the approach before committing to a build.