The Wolff Timer

The Wolff Timer is a beautifully designed interval timer built for circuit training, HIIT, Tabata, and any workout that needs precise timing. SIMPLE & POWERFUL Set your work time, rest time, rounds, and sets. Tap start. That's it. No complicated menus, no subscriptions, no ads. LIVE ACTIVITY See your timer right on your Lock Screen and Dynamic Island. Always know what's coming next without unlocking your phone. WORKS WITH YOUR MUSIC Audio cues automatically lower your music volume during beeps, then restore it. Your Spotify, Apple Music, or podcasts keep playing. BACKGROUND RELIABLE The timer keeps running accurately even when your phone is locked or you're using other apps. Never miss a transition. PERFECT FOR • Circuit training • HIIT workouts • Tabata protocols • Boxing rounds • CrossFit WODs • Yoga flows • Any interval-based training FEATURES • Customizable work and rest intervals • Multiple sets with rest between sets • Live Activity on Lock Screen & Dynamic Island • Audio cues that respect your music • Clean, distraction-free interface • No account required • No subscription • No ads Built by someone who actually uses it.