FEATURES

Countdown and lap stopwatch

For rest between sets, station changes and race practice, beside your interval timers

Countdown

  • Four presets, one tap each. Touch and hold a preset to change it.
  • Up to 30 minutes and 59 seconds.
  • A sets counter, to keep track of your sets or rounds.
  • On Apple Watch too, on its own.

It’s made for rest between strength sets, for AMRAPs, and for anything that needs a single clock.

Lap stopwatch

  • Record laps for runs, stations or sets.
  • Keeps running after you close and reopen the app.
  • A chart of your laps, so you can see if you’re holding your pace.
  • On Apple Watch too.

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’s lap stopwatch on iPhone at 00:38.32, with a chart of six laps, the average lap and the slowest lap marked

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.