Live Activity and Watch sessions
Start on iPhone and keep the current exercise, set progress, and rest timer on Lock Screen, Dynamic Island, and Apple Watch.
Live Activity exists so you don’t unlock your phone between sets. The Watch session exists so the phone can stay in your bag.
iPhone Live Activity
- Tap Start on a workout.
- A Live Activity appears on the Lock Screen: workout name, current exercise, set progress (for example Set 2 of 4), rest countdown, and a peek at the next exercise.
- On iPhones with Dynamic Island, compact state lives in the island; expand it for more detail.
- Tap the Live Activity to jump back into the current exercise.
Live Activity stays up while the phone is locked. That is the feature.
Apple Watch mirror
- Install Hammr on iPhone — the Watch app installs with it.
- Start the workout on iPhone.
- The Watch Workout tab switches to session view: same exercises and sets, live heart rate, rest timer synced with the phone.
- End the workout — Live Activity dismisses and Watch shows a summary.
HealthKit on Watch is what records heart rate for the session.
Why this is in Help
Most lifting apps still don’t ship a gym Live Activity. If rest isn’t on your Lock Screen, confirm you started the session from Hammr (not a leftover background state) and that Live Activities are allowed for Hammr in iOS Settings.
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Hammr Fitness is for wellness and fitness purposes only. It is not medical advice. Consult a physician before starting any exercise or nutrition program. If you have a medical emergency, call emergency services.