PRIVATE AI FITNESS TRACKER FOR IPHONE
Track your fitness.Ask your data.Keep it on your iPhone.
PrepAI brings workouts, nutrition, hydration, sleep, body metrics, supplements, and Apple Health into one private app. No PrepAI account. No subscription. Optional AI runs on-device.
Free for iPhone • No account required
Weekly insight
Training consistency up 12%
Macros
Protein target hit
On-device processing
No PrepAI account
Start tracking without creating a profile on PrepAI's servers.
On-device AI
Supported AI features process fitness context on the phone.
Apple Health ready
Import and write authorized data when you choose.
No subscription
No recurring plan or in-app purchase.
Your fitness does not happen in separate apps.
Training, nutrition, recovery, body changes, and consistency affect one another. PrepAI keeps them in one local timeline so you can see the full picture.
Train
Templates, sets, timers, workout history, and progress records.
Fuel
Meals, calories, macros, custom foods, recipes, and meal planning.
Recover
Sleep, hydration, body metrics, and daily trends.
Stay consistent
Supplement protocols, reminders, dose logging, and adherence history.
ON-DEVICE AI
Useful AI. No cloud conversation.
Use the fitness information already stored on your device to create summaries and meal plans without uploading your personal history to a remote AI service.
1
Your local records
Workouts, meals, sleep, hydration, body metrics
2
On-device model
AI processes the selected context locally
3
A useful result
Weekly summary or meal plan
Example prompts
Summarize my training and recovery this week.
Create a meal plan around my calorie and macro targets.
What consistency patterns stand out in my recent logs?
Important
Core tracking works without AI. AI features are optional and run on-device.
Powered by ExecuTorch
Private by architecture—not by promise.
No PrepAI account is required. Your PrepAI records stay in the local app database, Apple Health access is permission-based, and optional AI inference runs on your device.
No PrepAI cloud profile
There is no account containing your fitness history.
Permission-based Health access
Connect only the Apple Health categories you choose.
Manual portable backups
Export a JSON backup and store it somewhere you control.
Local deletion
Delete your PrepAI records without submitting a request.
What leaves the device?
ACTIVITY
LEAVES DEVICE?
Core PrepAI logs
No
On-device inference
No
Apple Health access
No
Manual backup
User choice
App download and update checks
Yes
Model download (optional)
Yes
Data PrepAI stores
Health and fitness records you enter, plus Apple Health data you authorize, are stored in the app database on your device. PrepAI does not require or create a server-side health profile.
Network activity
The app can contact Apple or Expo infrastructure for installation and update checks, and a model host when you choose an optional on-device AI feature that needs a model download. Your local health-history database is not included in those requests by PrepAI.
Apple Health
PrepAI requests Health access only after you choose to connect it. Authorized data is used for app features and is not used by PrepAI for advertising or sold. You can change Health permissions in iOS Settings.
Exports, support, and deletion
Files leave the app only when you choose a share destination. If you email support, the email service processes what you send. Delete Local Data removes PrepAI records, setup choices, reminders, downloaded AI models, and app-generated export copies from this device. It does not delete records already written to Apple Health or copies you saved outside PrepAI.
Retention and security
Local records remain until you delete them or remove the app. PrepAI relies on the iOS app sandbox and device protections; no storage system can be guaranteed risk-free. Keep exported files only in destinations you trust.
Contact and changes
This policy is effective August 3, 2026. Material changes will be reflected here and in the app release. A verified privacy and support contact will be published before the public release.
Log the work. See the progress.
Templates, sets, reps, weight, duration, rest timers, and session history. Your next set, previous performance, and rest timer stay where you need them—without a social feed or account setup.
Workout templates and reusable routines
Sets, reps, weight, and rest timers
Session history and progress trends
Plan and track without feeding an ad profile.
Meal logging, macros, custom foods, saved recipes, nutrition targets, and AI-powered meal planning. All stored locally.
Calories and macro tracking
Custom foods and saved recipes
AI meal planning from your targets and preferences
Training makes more sense with context.
Review sleep, hydration, weight, and body trends alongside your training to notice patterns and make informed adjustments.
Sleep duration and quality tracking
Hydration logging with daily targets
Weight and body metric trends over time
A readable 30-day summary you control for clinician discussions
Keep the protocol organized.
Schedule supplement protocols, log doses, review adherence, and set reminders. PrepAI helps organize the routine you choose.
Protocol scheduling with flexible frequency
One-tap dose logging
Adherence summaries and reminders
PrepAI helps organize the protocol you choose. It does not prescribe supplements or determine whether a product or dose is safe for you.
Works with the fitness data already on your iPhone.
Import authorized activity, workouts, sleep, hydration, and body information. Write supported records back when you choose. Apple Health is optional—manual tracking remains available.
CAN READ
Active energy
Steps
Workouts
Sleep
Heart rate
HRV
Weight
Body fat %
Hydration
Dietary energy
CAN WRITE
Water
Weight
Workouts
Dietary energy
Protein
Carbs
Fat
Apple Health is optional. Manual tracking remains available.
Start without signing up.
01
Set your goals
Enter the body metrics, targets, activity level, and preferences you want PrepAI to use.
02
Connect Apple Health—or don't
Grant only the categories you want to import or write. Manual tracking remains available.
03
Track and understand
Log fitness activity locally and use optional on-device AI when useful.
Built differently on purpose.
Useful without an account
Start tracking immediately after local onboarding.
Complete without AI
Core tracking works even if no AI model is installed.
AI without a remote profile
Local inference should not require uploading your full history.
Portable by default
You can export and restore your own records.
Permission-based integration
Apple Health categories remain under system permission control.
Free without subscription pressure
No fake crossed-out prices, countdowns, or upgrade prompts.
Frequently asked questions
Your fitness history should work for you.
Track training, nutrition, recovery, and progress with optional AI that runs on your device.
Free
No PrepAI account
No subscription
Local backup