# StayFit. — See every muscle you train > Interactive 3D body map visualizes workout intensity and muscle recovery. (iPhone/iPad app by N3D LLC.) - Source: https://appshunter.io/ios/app/stayfit/id6803222222 (this page in markdown: same URL + `.md`) - Developer: [N3D LLC](https://appshunter.io/developer/6803222224) - Category: Health & Fitness - Price: Free with in-app purchases - Rating: 5.00/5 from 6 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 9 MB - Languages: American English - Released: 2026-09-07 - Data updated: 2026-09-19 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/stayfit/id6803222222/reviews.md ## What is StayFit.? See every muscle you train. StayFit turns your workouts into something you can actually see. An interactive 3D body map lights up each muscle by how hard you've worked it — so you always know what you're hitting, and what you're neglecting. FEATURES • Interactive 3D muscle map that shades muscles by training effort, in real time • Build custom workout splits — push/pull/legs, upper/lower, or your own routine • Log sets, reps, and weight in seconds — plus cardio (run, bike, row, and more) • Per-muscle recovery tracking so you know when each muscle is ready again • Progress charts for volume, workouts, bodyweight, and cardio • Apple Health sync for steps, active energy, and weight • Works fully offline — no account needed, your data stays on your device WHY STAYFIT Most fitness apps are just lists of exercises. StayFit is visual. Watching your body respond to your training keeps you consistent and balanced — and makes it obvious when a muscle group is falling behind. Whether it's your first week in the gym or your tenth year, StayFit gives you a clearer, smarter way to train. STAYFIT PREMIUM Unlock advanced features with StayFit Premium — a monthly or annual subscription with a free trial. Payment is charged to your Apple ID at purchase confirmation. Subscriptions auto-renew unless canceled at least 24 hours before the period ends; manage or cancel anytime in your App Store settings. Privacy Policy: https://stayfit.dev/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Interactive 3D muscle map - Custom workout split builder - Set, rep, and weight logging - Per-muscle recovery tracking - Progress charts - Apple Health sync - Offline functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly | $11.99 | per month | | Premium Annual | $47.99 | per year | ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/stayfit/id6803222222/reviews.md ### 5/5 — Very easy to use *2026-09-17* 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. ### 5/5 — Highly Recommended *2026-09-15* 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. ### 5/5 — Stay fit *2026-09-12* 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. ### 5/5 — Great for fitness tracking *2026-09-10* Its great at helping you reach your fitness goals and visualizing your progress ### 5/5 — Excellent app for athletes *2026-09-10* Excellent app for athletes ## Frequently asked questions about StayFit. ### 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. ## Version history (last 3 releases) ### 1.2 — 2026-09-15 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. ### 1.1 — 2026-09-08 Minor improvements and polish. ### 1.0 — 2026-09-07 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-19.*