Your whole workout, on your Wear OS watch
Pair the HeavyMuscle Wear OS app and leave your phone in the bag. Start a session, log every set, swap exercises and watch the rest timer tick down — straight from the watch.
Phone stays in the bag
The watch runs the session on its own, so there is no unlocking, no pocket and no propping your phone against a dumbbell rack.
Everything syncs back
The phone stays the source of truth: sets logged on the watch land in your history, your charts and your recovery map.
Built for sweaty hands
Large tap targets, a rest timer you can read at arm's length, and no tiny menus in the middle of a set.
Which watches work
Wear OS 3 or later — Galaxy Watch 4 and newer, Pixel Watch and other Wear OS 3+ watches. Free, with no Pro subscription.
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.