HIIT Timer — 30/15
10 rounds · 30s work / 15s rest · 7m30s — 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 · 0:30
7:40 left
Palette
Space start / pause R reset M mute F fullscreen
How it works
The HIIT protocol
Thirty seconds work, fifteen rest. A crisp 2:1 that keeps the heart rate high without full recovery.
- 30 seconds of hard work
- 15 seconds of active or full rest
- Repeat for 10 rounds
- Mix movements or hold one — the timer just keeps the intervals honest
Work
30s
Rest
15s
Rounds
10
Total
7m30s
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.
Related timers
More free timers
HIIT Timer
10 rounds · 30s work / 30s rest · 10m
HIIT Timer — 40/20
8 rounds · 40s work / 20s rest · 8m
HIIT Timer — 45/15
8 rounds · 45s work / 15s rest · 8m
HIIT Timer — 20/40
10 rounds · 20s work / 40s rest · 10m
HIIT Timer — 60/60
10 rounds · 60s work / 60s rest · 20m
Tabata Timer
8 rounds · 20s work / 10s rest · 4 min