20-Minute HIIT Timer
20 rounds · 40s / 20s · 20 min — a real, working hiit timer right in your browser. Big color-coded phases, beeps, and the screen stays awake. Free, no sign-up.
Get Ready
0:10
Next: Work · 0:40
20:10 left
Palette
Space start / pause R reset M mute F fullscreen
How it works
The 20-Minute HIIT protocol
Twenty minutes of 40/20 intervals — twenty rounds. Enough time to work several movements while keeping every interval intense.
- 40s work / 20s rest
- 20 rounds (20 minutes)
- Rotate movements every few rounds
Work
40s
Rest
20s
Rounds
20
Total
20 min
The Pulse app
Love these colors? There are 134 more.
This free timer is a taste of Pulse for iPhone & Apple Watch. The app has 136 searchable palettes, a full color picker, saved custom timers, big glanceable numbers, and your music keeps playing underneath. $3.99 once — no subscription, no ads, ever.
136 palettesEight free, 136 total — searchable, plus a full color picker to match your vibe.
Apple WatchStart any saved timer from your wrist with a haptic tap at every transition.
Live ActivityLock-Screen countdown + Dynamic Island pill keep ticking while you use other apps.
$3.99 onceOne payment unlocks everything. No subscription. No auto-renew. No ads.
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