FEATURES
Custom interval timer
Build any workout interval by interval, with its own names, colors and icons, from a quick template or from scratch
Most workouts fit a simple timer: work, rest and sets. When yours doesn’t, Cero’s advanced timer lets you build it one interval at a time.
What you can build
- Up to 200 intervals in one timer, each from 1 second to 30 minutes.
- Open intervals, with no fixed length: they move on when you tap Done, for distances, reps or rounds for time.
- Your own kinds of interval, with a name, a color, an icon, an intensity level and a default length, such as Row, Burpees or Stretch.
- Reorder, duplicate and delete intervals, and duplicate a whole set of them to repeat a block.
- Adaptive HR rules for the timer, to rest by heart rate.
Quick templates
| Template | Adds |
|---|---|
| Tabata (20/10) | Rounds of 20 seconds of work and 10 of rest, 8 by default |
| EMOM (1–3 min) | One interval per round, each 1, 2 or 3 minutes |
| Work / Rest | Rounds of work and rest, 40/20 × 8 by default |
| Rounds for time | Open rounds, with optional rest between them |
| Run + station | Pairs of open Run and Station intervals, for HYROX-style training |
Save and share
Save your timers, reorder them in your library, and share them with a friend or a whole class as a Cero file or a QR code. Automatic iCloud backups protect your saved timers and custom intervals. The free version saves 2 timers, and Cero Pro saves as many as you like.
YOUR NEXT SESSION STARTS HERE
Bring the effort.
We’ll keep the time.
Cero is free to download for iPhone, iPad and Apple Watch.
Download Cero
Cero is a timer, not a medical device. If you’re new to hard exercise, are pregnant or have a health condition, check with your doctor first, and stop if you feel unwell.