★★★★★
"I was on my 5th set and the timer just froze the second the screen went off. Had to scrap the whole thing and start over."
Tabata Timer runs as a first-class service on your watch or your phone. Screen off, the countdown keeps ticking; cues land to the millisecond. No drift, no "stuck at 0:07", no starting the set over.
The watch app runs standalone — no phone install required
Here's what users of the leading apps have been putting up with for years. Everything you see here is something we fixed before we ever shipped.
"I was on my 5th set and the timer just froze the second the screen went off. Had to scrap the whole thing and start over."
"The phase-change beep lags by a full 2 seconds. On a 20-second sprint that's 10% of the effort. Useless."
"Kills the battery in 40 minutes. Clearly not using Health Services — they're hammering the HR sensor."
We're not selling magic. We're selling the right APIs used the way Google designed them — something most Wear OS fitness apps don't bother to do.
The timer runs inside a ForegroundService
bound to the SoC's monotonic SystemClock, not the screen redraw cycle.
Drop your wrist, flip on theater mode, take a call — the counter keeps ticking
to the millisecond and the haptics fire on the exact beat.
Native Health Services integration: instead of polling the sensor we subscribe to it. The watch aggregates and batches readings in hardware, so the energy cost is closer to checking the time than running a workout.
The watch app runs on its own — you don't even need to install the phone companion to train. Install it and you get the full beat ruler, easier preset editing and a richer history. Either side can start a session; the other catches up to the millisecond over local Bluetooth LE — no cloud involved.
Serious information density: a huge timer, a peripheral progress ring, set dots and HR always visible. No gamification, no medals, no "3-day streak" guilt. What happened, happened.
The AOD is designed for OLED on purpose: pure white on true black, no halos, no gradients. Zero pixel burn, and the seconds digit stays legible from a meter away.
Spotify, YouTube Music, any Wear OS player — works with all of them. Phase cues use native audio ducking: volume dips for 200 ms and comes right back. No cuts, no pauses, no awkward resumes.
You landed here because you already know what a Tabata is. You're not going to ask us what EMOM means.
That's fine. There are great apps out there that do the exact opposite.