Riven

Your dream physique is built on muscle failure, and you won't get it without us.

Riven turns your Apple Watch into an automatic rep counter. It starts your sets, counts your reps, names the exercise and measures how close each set came to muscle failure. No buttons, no phone, no logging between sets.

More than 60 common lifts are recognized on their own. No camera, no barbell clip, no chest strap: just the watch you already wear.

Free for 1 workout a week, or Unlimited ($4.99/month or $39.99/year) with a 7-day free trial.