HIIT Timer
Build any high-intensity interval workout — warmups, work, rests, and repeating rounds — and let clear visuals and spoken cues carry you through it, hands-free.
High-intensity interval training (HIIT) alternates short bursts of hard effort with brief recovery. The whole method depends on precise timing: you push at maximum intensity during the work interval, then rest just long enough to go again. Voice Timer is built for exactly this — you define the work and rest lengths once, and the app announces every transition so you can keep your eyes off the screen and your focus on the movement.
How to set up a HIIT timer
Add a warm-up interval (e.g. 3 minutes) so you start loose.
Set your work interval — the hard effort, e.g. 40 seconds.
Set your rest interval — active recovery, e.g. 20 seconds.
Group the work + rest into a loop and repeat it for the number of rounds you want.
Press start — voice guidance calls out each phase and the countdown.
Why hands-free voice guidance matters
During a hard interval the last thing you want to do is squint at a phone. Voice Timer uses text-to-speech to announce the current interval, the next one, and the final countdown, so you always know what is coming without breaking form. You can tune the voice rate, pitch, and volume, and add custom cues like “breathe” or “halfway” at exact seconds.
Build once, reuse forever
Save your favourite HIIT structures as presets. Ladder intervals, EMOM-style rounds, pyramid sessions, or a simple 40/20 circuit — build infinite variations for HIIT, Tabata, or CrossFit and run them again with one tap. You can even export a full session as an MP3 to play alongside your music.
Frequently asked questions
What is a HIIT timer?
A HIIT timer is an interval timer that alternates between high-intensity work periods and short rests, signalling each change so you can train at maximum effort without watching a clock. Voice Timer announces every interval out loud so you stay hands-free.
What is a good HIIT interval to start with?
A common beginner structure is 30 seconds of work followed by 30 seconds of rest, repeated 8–10 times, after a short warm-up. As you progress you can shorten the rest (e.g. 40s work / 20s rest) or add more rounds. Voice Timer lets you set any work and rest length.
Is Voice Timer free for HIIT workouts?
Yes. Building and running unlimited HIIT presets, voice guidance, and offline use are completely free and require no account.
Does the HIIT timer work offline?
Yes. Core timing and voice cues run fully on-device, so your HIIT workout keeps running even without a connection or with the screen locked.