Tension app icon

Build strength through
time under tension.

Tension guides every rep by tempo, counts them out loud, and logs your sets right from your wrist — then saves it all to Apple Health.

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Time under tension

Guided concentric and eccentric tempo timing so every rep counts the way you planned.

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Spoken rep counting

Hear each rep counted aloud through your watch or Bluetooth earbuds — eyes-free, hands-free.

Apple Watch companion

Run timers, count reps, and log completed sets straight from your wrist during a workout.

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Apple Health sync

Completed workouts save to Apple Health, so your training shows up alongside the rest of your activity.

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Private iCloud sync

Your workouts stay in your own iCloud and sync across your devices. No accounts, no servers.

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Location-aware

Optionally suggests the right workout based on where you are — the gym, home, or the road.