Build a Workout Tracker App
— Your Gym Companion
To make a workout tracker app or fitness tracking app with AI, describe it to Fastshot, the AI mobile app builder. It generates a native iOS and Android app with exercise logging, routines, rest timers and progress charts. The first version takes about 5 to 7 minutes, with no coding.
How do I make a fitness tracking app with AI?
Describe your fitness app to Fastshot in plain language: exercises, sets and reps, routines, rest timers and progress charts. It writes a plan you approve, then generates a native iOS and Android app in about 5 to 7 minutes. Test it on your phone by QR code, refine it by chat, then publish to both stores.
Last updated: October 27, 2026
Why Build a Workout Tracker App?
Fitness apps are one of the most downloaded categories on both app stores. People want to track their workouts, follow structured programs, and see measurable progress toward their fitness goals.
A workout tracker needs exercise databases, custom routine builders, rest timers, progressive overload tracking, and performance charts — complex features that traditionally take months to develop.
Fastshot lets you describe your ideal workout tracker and generates a complete React Native app. Include exercise libraries, custom routines, set and rep logging, and analytics dashboards that work on both iOS and Android.
You can build this workout tracker app using our AI app builder — describe what you want and get a working native app in minutes.
Key Features for Your Workout Tracker App
Rep counters, rest timers, and progress charts — everything a serious lifter or casual gym-goer needs in one native app.
Exercise Library
Browse hundreds of exercises organized by muscle group with descriptions and form guidance.
Custom Routines
Create and save personalized workout routines with specific exercises, sets, reps, and rest periods.
Workout Logging
Log sets, reps, weight, and duration in real-time during workouts with an intuitive interface.
Rest Timer
Built-in countdown timer between sets with customizable rest periods and audio alerts.
Progress Tracking
Track personal records, volume over time, and strength progression with visual charts.
Workout History
Review past workouts, compare performance across sessions, and identify trends in your training.
How to Build a Workout Tracker App with Fastshot
Outline Your Training Philosophy
Describe the workout styles your app supports: weightlifting, HIIT, bodyweight, or running. Tell Fastshot about rep tracking, rest timers, and program structures.
AI Creates Your Fitness App
Fastshot generates workout logging screens, exercise libraries, set/rep trackers, and progress charts backed by a Supabase database.
Take It to the Gym
Preview on your phone, run through an actual workout, and test the rep counter, rest timer, and exercise navigation in a real training session.
Launch and Start Training
Cloud builds package your app for both stores. Publish and get your first users lifting, running, and tracking progress.
Frequently Asked Questions
Can users create their own workout routines?
Yes. The generated app includes routine builders where users create custom workouts by selecting exercises, setting rep/set targets, and ordering movements.
Does it track progressive overload over time?
Fastshot generates history tracking that logs weight and reps per exercise over time, making it easy for users to visualize their strength progression.
Can I include exercise demonstration videos?
Describe an exercise library with media content in your requirements. Fastshot generates the screens and media components — you add the exercise content afterward.
Is there a built-in rest timer between sets?
Describe rest timers in your app spec and Fastshot generates configurable countdown timers between sets with audio or vibration alerts.
How do I make a fitness tracking app with AI?
Describe the app to Fastshot: workouts, sets and reps, routines, rest timers and charts. Approve the plan it writes and the first version of your iOS and Android app is ready in about 5 to 7 minutes. Preview it on your phone, refine it by chat, and publish to the App Store and Google Play.
What is the best workout tracker app builder?
Fastshot is a fitness app builder that turns a text description into a native iOS and Android workout tracker with an exercise library, routines, set and rep logging, rest timers and progress charts. You keep the source code and can publish to both app stores from Fastshot.
Can it integrate with Apple Health or Google Fit?
Fastshot generates standard React Native + Expo code. After export, you can add health platform integrations using community packages like react-native-health.
Build the Workout App You Wish Existed
Every lifter has opinions about their tracking app. Describe yours and Fastshot builds it — complete with exercise logging, progress charts, and rest timers.