Use case

Build a fitness app with AI — no code, full native

Workouts, habit tracking, subscriptions, and progress analytics, generated from one prompt.

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At a glance

Output
Native iOS + Android + web preview
Offline support
AsyncStorage / SQLite for workouts and progress
Monetization
Subscription paywall (Stripe or RevenueCat)
Engagement
Push reminders and streak tracking
Stack
Expo + React Native, local storage, REST API
Time to first preview
Under five minutes

Example prompt

“Build a native fitness app with daily workouts, habit tracking, progress charts, subscription paywall, onboarding, and push reminders.”

What AppGenie generates

AppGenie generates a full fitness app with workout plans, habit and progress tracking, subscriptions, and analytics. You get real app code with offline storage, push reminders, and a ready-to-deploy onboarding flow.

Daily workouts and plans

Structured workout library with progress tracking.

Habit and streak tracking

Local storage + progress analytics out of the box.

Subscription paywall

In-app purchase flow and Stripe subscription wiring.

Onboarding flow

Goal-setting and personalization screens.

Push reminders

Configurable reminders for workouts, water, and habits.

Inside the fitness app AppGenie ships

A breakdown of the concrete features wired into the first generated build, grouped by area.

Training

  • Workout library with categories and difficulty levels
  • Step-by-step workout player with timers and rest screens
  • Custom plan builder or AI-suggested weekly plans
  • Progress logging for sets, reps, and weights

Habits and engagement

  • Daily habits and streak tracking with local storage
  • Progress charts for weight, workouts, and habits
  • Configurable push reminders for workouts and habits
  • Onboarding flow that personalizes plans by goal

Monetization

  • Free tier and Pro paywall with feature gating
  • Stripe or RevenueCat subscription wiring
  • Restore purchases and trial logic

Screens you get out of the box

  • Onboarding
  • Home
  • Workout detail
  • Progress
  • Paywall
  • Profile

Key screens, and what each one does

  1. Onboarding

    Capture goals, fitness level, and reminder preferences.

  2. Home

    Today's workout, streak status, and quick habit check-ins.

  3. Workout detail

    Exercise list, demo media, and a timed player view.

  4. Progress

    Charts for workouts completed, weight, and habit streaks.

  5. Paywall

    Plan comparison and subscription checkout.

  6. Profile

    Goals, units, reminder times, and account management.

Data model sketch

The default entities AppGenie scaffolds for a fitness app. Edit the spec at sign-off to add fields, drop entities, or rename anything.

User

  • id
  • email
  • name
  • goal
  • units
  • createdAt

Workout

  • id
  • name
  • category
  • difficulty
  • durationMinutes
  • exercises[]

Exercise

  • id
  • workoutId
  • name
  • reps
  • sets
  • restSeconds
  • mediaUrl

WorkoutLog

  • id
  • userId
  • workoutId
  • completedAt
  • durationMinutes
  • notes

Habit

  • id
  • userId
  • name
  • frequency
  • streakCount
  • lastCheckInAt

Subscription

  • id
  • userId
  • plan
  • status
  • startedAt
  • renewsAt

Example prompts to start from

Paste any of these into the AppGenie builder to kick off a new fitness app, then refine from chat.

“Build a native fitness app with daily workouts, habit tracking, progress charts, and a Pro subscription paywall.”

“Build a yoga app with guided sessions, a calendar of classes, push reminders, and a Stripe subscription.”

“Add a "weekly plan" generator that suggests workouts based on the user's goal and last week's logs.”

“Add Apple HealthKit and Google Fit hooks to import steps and active minutes.”

How to build a fitness app with ai

  1. 1

    Describe your fitness app

    Outline the goals, habits, and subscription model.

  2. 2

    Approve the spec

    AppGenie drafts screens, data models, and flow.

  3. 3

    Live build and iterate

    Watch screens appear live; ask for changes in chat.

  4. 4

    Ship

    Export code and submit to the App Store and Play Store.

How AppGenie builds your fitness app

A look at the multi-agent pipeline that turns your prompt into a generated codebase.

  1. 1

    A1 detects the use case

    IntentClassifier sees "fitness app" and routes to the full-generation pipeline with the fitness preset.

  2. 2

    A3 drafts onboarding and plans

    PRDWriter outlines screens, the goal-based onboarding, and the workout/habit data models.

  3. 3

    A4 + A5 generate the app

    Architect plans local storage, push reminders, and the paywall; CodeGenerator wires the screens and Stripe hooks.

  4. 4

    A6 validates and snapshots

    Validator checks the build; the version is snapshotted so you can roll back any chat-driven change.

The bottom line

A fitness app is one of the strongest defaults AppGenie ships. Daily workouts, streaks, a paywall, and push reminders are wired in the first pass — leaving you to focus on programming the actual workouts and your brand.

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Fitness app — FAQ

Can AppGenie build a fitness app with subscriptions?

Yes. The default fitness prompt wires a subscription paywall with Stripe or RevenueCat hooks. Plug in your keys, and the subscription flow is ready to test.

Does the fitness app support offline workouts?

Yes. AppGenie scaffolds local storage with AsyncStorage or SQLite so users can complete workouts offline and sync progress when they reconnect.

Ready to build a fitness app with ai?

Describe it once. AppGenie generates a full production codebase you own, with live preview and diff-aware updates.

Start building free