Work/rest rounds built for HIIT, Tabata, EMOM and circuit training — with clear phase cues, a 3-2-1 countdown, and a layout designed to be read at a glance from across the room.
Set 0 for prep to skip the get-ready countdown, or 0 for rest to move straight into the next round (useful for EMOM-style work).
The TimerHub Interval Timer is built for one job: keeping you moving through work and rest periods without touching your phone. Whether you're following Tabata, running a HIIT circuit, timing EMOM sets, or coaching a group class, it counts every round accurately, announces phase changes with a clear tone, and gives you a 3-2-1 audio cue before each interval ends so you're never caught off guard mid-rep.
Pick a preset that matches your workout style, or enter your own work time, rest time, round count and prep countdown. Tap Start Workout and the timer takes over — counting down your prep window, then alternating work and rest until every round is complete. Use Pause if you need to stop mid-set, and Reset to return to setup and change your numbers. Tap the fullscreen icon to blow the display up for viewing across a gym floor or propping your phone against a water bottle.
HIIT circuits: alternate 30-45 seconds of work with matching rest across 6-10 rounds for a full-body conditioning session. Tabata: the classic 20-seconds-on, 10-seconds-off protocol for 8 rounds — brutal, short, effective. EMOM (Every Minute on the Minute): set work to 60 seconds and rest to 0, then fit your reps inside each minute before the next one starts. Boxing rounds: set work to 3 minutes and rest to 1 minute for standard round timing. Circuit training: string together stations with even work/rest splits. Yoga and mobility flows: use longer work windows with short transition breaks between poses.
Yes. After your final work interval, the timer goes straight to the completion screen instead of starting one more rest period, since there's nothing left to rest before.
Yes. Set work to 60 seconds and rest to 0, and each round becomes a full one-minute work window with no separate rest phase — exactly how Every Minute on the Minute training is structured.
In the last three seconds of every phase — prepare, work or rest — you'll hear a short beep on each of the final three seconds, so you always know a change is about to happen without needing to look at the screen.
Yes. Pause holds the exact time remaining in the current phase, and resume picks up right where you left off — your round count and phase sequence are unaffected.
Yes. The countdown is based on real timestamps rather than a simple tick counter, so the displayed time is corrected for any delay when you come back to the tab — it won't drift.
Yes. Add ?work=30&rest=15&rounds=8 to the page URL (seconds for work and rest, a count for rounds) and those values will pre-fill the setup fields automatically — handy for sharing a routine or linking from a template.