The workout tracker built for your Apple Watch
Start a session on your iPhone and it lands on your wrist. Every set you log there is a real set — not a shortcut — and it goes straight into the same history your progress charts read.
One tap per set
Weight and reps come pre-filled from your last session. Tap to confirm, or turn the Digital Crown to adjust — no keyboard, no scrolling.
A rest timer you can feel
The countdown taps your wrist in the final seconds, so you do not have to stare at a screen with a barbell in your hands.
Real HealthKit data
Live heart rate and calories, and the workout counts toward your rings. The summary lands in your session instead of a separate app.
Which watches work
Any Apple Watch on watchOS 10 or later, paired with an iPhone. The watch app is included for free — no Pro subscription needed.
Common questions
- Does HeavyMuscle work on smartwatches?
- Yes — HeavyMuscle has dedicated apps for both Apple Watch and Wear OS. Start a session, log every set, swap exercises and watch the rest timer straight from the watch while the phone stays in your bag; everything syncs back the moment you pick it up. On Apple Watch, workouts run as HealthKit sessions with live heart rate and calories, and count toward your activity rings. Both watch apps are free — and HeavyMuscle is one of the few gym trackers with a real Wear OS app for Galaxy Watch and Pixel Watch, not just Apple Watch.
- Which platforms is HeavyMuscle available on?
- HeavyMuscle is available for Android on Google Play and for iPhone on the App Store, in six languages. Companion apps for Apple Watch and Wear OS smartwatches let you run workouts straight from the wrist.
- Is HeavyMuscle free?
- Yes. Workout tracking, the 873-exercise library, strength progress charts, body measurements, the recovery map and the AI coach (with a weekly quota) are all free, supported by occasional ads on browsing screens — never during an active workout. HeavyMuscle Pro is an optional subscription (monthly, annual or a one-time lifetime purchase) that removes ads and greatly raises the AI coach quota.
Take it for a session
Free on Google Play and the App Store. No account, works offline, and you can import your history from your current app in a couple of minutes.