Fitness app builder
Turn your training method into an editable Flutter fitness app. Describe your workouts, sessions and how progress is tracked, then generate the screens, preview the app and test it before launch.
Free to start, no card needed. The AI fitness app builder writes real Dart that you can read in the studio and download on Pro and up.
Pulse is an interval workout app the FlutterGo team made with this workout app builder. The three screens below were captured from its live preview, not drawn as mock-ups.
Sample data throughout: the workouts, the athlete and the session count were filled in for the demo.
Pulse has three tabs: Workouts, History and Profile. The captures cover the Workouts tab, the timer screen and the athlete profile; the History tab exists in the app but is not shown here. None of the screens show health data sync, exercise videos, coach chat or reminders. The two lists further down separate what the captures show from what still needs building.
Each card says where its feature stands. Shown in the demo means the Pulse captures include it. Generated screens are built when you describe them. Live with Supabase needs your own Supabase project connected.
Pulse's Workouts tab holds the plans: interval sessions on cards, each with its rounds, total length and a Start button. Chips for All, Tabata, HIIT, EMOM and Custom narrow the list, and a quick start card sits on top. The captures show no multi-week programme. Describe the weeks and the agent generates those screens.
Shown in the demo Programmes: generated screensPulse is built around timed rounds, not logged sets. For strength work, list each exercise with its sets, reps and rest, and the agent builds a session screen where users record every set and its weight. Ask for a kg or lb choice in the profile, then test both units.
Generated screensThe timer is the heart of the demo. The capture shows HIIT 40/20 set for 10 rounds, Round 1 of 10 and a warm-up counting down from 45 inside a ring, with Reset, Start and Skip below. Want other work and rest splits or an extra phase? Ask in chat and the agent changes the timer.
Shown in the demoIn the Profile capture the goal reads Hit 4 HIIT sessions every week, and the weekly bar stands at 5 of 4. The History tab exists but is not captured. To keep sessions for months and across phones, connect Supabase and ask for sign-in plus a sessions table whose rows only their owner can read.
Live with SupabaseTo create a fitness app with FlutterGo, you go from a written training method to a tested app in three steps. The preview runs in your browser, so you need no Mac or emulator. Already designed the screens? Start from your Figma file and wire up the timer afterwards.
Write down how you train people: the workout types, the work and rest times, the rounds and how many sessions make up a week. Add how progress should be measured, such as sessions per week or weight lifted. Then type or paste the brief into the home page composer and send it.
The agent plans the screens and writes the Dart code, and you watch the app change in the phone preview while it works. Each chat command costs 1 credit, so ask for one change at a time, such as a longer rest phase or a new filter chip. Use Edit mode for small visual tweaks and Show code to read or edit any file.
Connect Supabase from Settings and ask the agent to add accounts, a profile table and a sessions table with row level security, so each user sees only their own history. Finish a workout, sign in on a second device and check that the session appears there too. From Starter, install an Android test APK and time a full session on a real phone.
Build an interval timer app with three tabs: Workouts, History and Profile. Workouts opens with a quick start card, then workout cards for Tabata, HIIT and EMOM, each showing rounds, total length and a Start button, with filter chips by type. Start opens a full-screen timer that runs a warm-up, then work and rest phases, counts the rounds and has Reset, Start and Skip. History lists finished sessions. Profile is an athlete setup with a name, a goal and a weekly session target with a progress bar. Use a dark style with one bright accent colour and sample data.
A capture proves that a screen exists, not that everything behind it is done. The first list is what Pulse shows. The second needs additional development before your app can offer it.
Shown in the Pulse captures
Needs additional development
Sessions, a timer and a weekly goal fit more than interval training. Use FlutterGo as a personal trainer app builder, for a studio or for a home workout product; what changes is your brief and your data, not the process.
Give each client a profile, a goal and the sessions you set, then see what they complete. On Pro and up, FlutterGo builds an admin panel that shares the app's Supabase backend; sign in there to add or edit workouts and manage users. Before launch, send a client the Share link to try the running preview.
Live with SupabaseA studio app needs a class timetable, a coach for each class and a limit on places. Reserving a place is a booking job, so the booking app builder page covers the server-side check that stops a class overfilling. Pulse-style workout cards and a timer can sit in the same app for members who train on their own.
Live with SupabaseFor a home training product, start from the Pulse pattern of workout cards, a timer and a weekly goal. Then ask for a week-by-week programme, filters for kit-free sessions and a rest-day screen. Exercise videos and paid programmes need the extra development listed above.
Generated screensPulse is a standard Flutter project, and your app will be one too, with every file open to read and edit in the studio.
flutter run starts it..env.server. It never ships inside the app and is never pushed to GitHub.
People use a workout app mid-session, often with the phone on the floor, so timing faults get noticed fast. Run these cases on a real device as well as in the preview.
Building and previewing a fitness app starts on the Free plan. Paid plans add credits, a test APK, store publishing and the code itself.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Build and preview with 5 credits from sign-up, kept until you use them, across up to 2 projects. |
| Starter | $19 a month | Adds 50 credits a month and an Android test APK, so you can run a session on your own phone. |
| Pro | $49 a month | Adds 150 credits a month, publishing to Google Play and the App Store, Download code and GitHub sync, a website and admin panel, and your own AI and MCP. |
| Business | $99 a month | Adds 500 credits, everything in Pro and the Secrets Vault, which stores your keys encrypted. |
These are monthly list prices in US dollars; some countries get a regional price at checkout, and the pricing page shows yours. Each chat command costs 1 credit. An APK build costs 1 credit and is refunded if the build fails. A store deploy costs 2.5 credits for one store and 5 credits for both. Fix with AI costs nothing. Plans and billing in the docs has the detail.
What you need.
Store review is up to Apple and Google.
Straight answers on timers, progress, health data and selling programmes, and on what the Pulse demo does and does not prove.
Yes. Describe your workouts, phases and goals in chat, and the agent writes the Flutter screens while you watch them appear in a phone preview. The FlutterGo team built Pulse, the interval app on this page, the same way. The output is a standard Flutter project that you can download on Pro and up.
Yes. The Pulse captures show a full-screen interval timer with a warm-up phase, a round counter and Reset, Start and Skip controls. Ask for your own formats, such as Tabata, EMOM or a custom work and rest split. Before launch, test it with the screen locked and the app in the background.
Yes, once their data is stored. The Pulse profile shows a weekly goal with a progress bar, and its History tab exists but is not in the captures. To keep progress over time and across devices, connect Supabase and ask for sign-in and a sessions table with row-level security. The backends chapter covers the connection.
Not out of the box. Pulse does not sync with Apple Health, Google Fit or wearables, and FlutterGo has no built-in connection to them. Treat health data sync as additional development and plan it before you promise it to users. The code downloads on Pro and up, so a developer can extend the standard Flutter project.
Not in the demo: the Pulse captures show no payments or subscriptions. Digital programmes sold inside iOS and Android apps fall under Apple's and Google's in-app purchase rules, so selling them needs additional development that follows those rules. In-person sessions are different: they can be paid through your own Stripe account, whose keys go into the Stripe setup form that appears when the agent adds payments.
Yes, from one Flutter codebase. While you build, it runs in a phone preview in your browser, and from Starter you can install an Android test APK on your own phone. Pro and up add publishing: a signed App Bundle to the Google Play track you pick, and an iOS build signed on a cloud Mac runner in your connected GitHub repository, then sent to TestFlight. You need developer accounts with Google Play and Apple, and each store reviews the app before release.
Put your workouts on a phone, timer and all.Free to start, no card needed.