Interval timer for iPhone

Read it from across the room.

Hiitsu fills the whole screen with the color of your interval and says every change out loud, even with the screen locked and your music on.

Coming soon to the App Store Free · No account · No ads · No subscription
Workout screen in red with a large countdown labelled Work
0:10 get ready 0:20 work 0:10 rest × 8 rounds = 4:00

See it on your iPhone

Workout screen in mint green showing the rest interval Workout library with Tabata, HIIT 40/20, EMOM and running intervals Workout editor with colored work and rest intervals, rounds and sets Yellow summary screen saying Great job with total time and rounds
iPhone Duo folded, the workout countdown on the outer screen iPhone Duo open, the workout library as tiles with buttons in the side bar

Folded: the full workout on the outer screen.

iPhone Duo

Follows the fold.

On iPhone Duo, Hiitsu follows the fold. The workout runs on the outer screen, spreads out when you open it, and splits in two when you stand it up on the floor.

Keeps talking with the screen locked

  • Spoken interval names and a 3-2-1 countdown
  • Plays along with your music and podcasts, and can lower them during cues
  • Pauses for a phone call and picks up where you left off

Your workouts, your way

  • Tabata, HIIT 40/20, EMOM and running intervals ready to go
  • Several intervals per round, rounds, sets, rest between sets, warm-up and cool-down
  • Name an interval, like “Burpees”, and hear it announced

On every screen you have

  • Live Activity on the Lock Screen and in the Dynamic Island
  • Landscape layout for a phone propped on the floor
  • The countdown on your TV with AirPlay, the iPhone stays the remote

Nothing leaves your iPhone

  • No account, no ads, no tracking
  • Your workouts are stored only on your device
  • VoiceOver, Dynamic Type and Reduce Motion

A timer you can use every day without hitting a paywall.

Free, always

Hiitsu

  • Every built-in workout and the full editor
  • Up to 3 custom workouts
  • Voice and countdown with the screen locked
  • Live Activity, Dynamic Island and iPhone Duo layouts
  • The countdown on your TV
Coming later

Hiitsu Pro

Optional one-time purchase. No subscription.

  • Unlimited custom workouts
  • Apple Watch app with heart rate and Apple Health
  • Workout history and stats
  • iCloud sync across your devices

Until Pro arrives, custom workouts are unlimited, and the ones you create before then stay unlimited. A running workout is never locked. Available in English, Polish, Spanish, Portuguese and Hindi.