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StayFit.

StayFit.

See every muscle you train

6 ratings
5 reviews
💪 Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated
  • September 7, 2026
  • September 15, 2026

Developer

N3D LLC
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About

Visualize your workout progress with an interactive 3D body map that highlights muscles based on training intensity. Log your sets, reps, and cardio, and track muscle recovery. Syncs with Apple Health and works offline.

✓Interactive 3D muscle map
✓Custom workout split builder
✓Set, rep, and weight logging
✓Per-muscle recovery tracking
✓Progress charts
✓Apple Health sync
✓Offline functionality
Show original description

What's New in StayFit.

1.2

September 15, 2026

What's New in 1.2 • Muscle Map preview: explore the full interactive 3D Muscle Map before subscribing. • Guided onboarding: new in-app tips help first-time users log their first workout with ease. • Improved precision: more accurate muscle detection when tapping the 3D body. • Performance and stability improvements throughout.

More

Subscription plans

Premium Monthly

3D map, recovery, unlimited splits, full history & more

$11.991 Month
7 Days trial
How to cancel StayFit. subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Very easy to use

This app compared to all the other fitness apps I’ve used is on a different level. The UI also has a very modern feel.
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Highly Recommended

I love this app, I’m very dependent on this because it helps me stay on track, and pushes me to achieve my goal. I recommend this to anyone who’s looking to stay consistent with their workouts.
LiliRay_LiliRay_

Stay fit

This app helps beginners when you dont really know what exercise to do for the muscles you want to target. You can just click on the muscle on the 3d body model and it gives you what you need.
ChristopheChebatChristopheChebat

Great for fitness tracking

Its great at helping you reach your fitness goals and visualizing your progress
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Excellent app for athletes

Excellent app for athletes
daloul1981daloul1981

FAQ

What is StayFit?

StayFit is a health and fitness app that uses an interactive 3D body map to visualize your workout intensity and track muscle recovery. It allows you to log your exercises, build custom workout splits, and monitor your progress over time.

How does StayFit visualize workouts?

StayFit features an interactive 3D muscle map that lights up each muscle based on how hard you've trained it. This visual feedback helps you understand which muscles you're targeting and which might be neglected.

Can I log different types of workouts in StayFit?

Yes, StayFit allows you to log sets, reps, and weight for strength training, as well as cardio activities like running, biking, and rowing.

Does StayFit offer a free trial for its premium features?

Yes, StayFit Premium offers a 7-day free trial for both its monthly and annual subscription plans. You can manage or cancel your subscription at any time through your App Store settings.

What are the subscription costs for StayFit Premium?

StayFit Premium is available as a monthly subscription for $11.99 or an annual subscription for $47.99. Both plans include a 7-day free trial.

Does StayFit work offline?

Yes, StayFit works fully offline. No account is needed, and your workout data is stored directly on your device for privacy and accessibility.

How often is StayFit updated?

The latest version of StayFit is 1.2, and it was last updated on September 15, 2026. Updates typically bring new features, performance improvements, and bug fixes.

What devices is StayFit available on?

StayFit is currently supported on iPhone devices. It is rated for ages 4 and up.