Prepare, Work and Rest phases with fully customisable durations. Up to 20 exercises per session.
🎙️
Voice Coaching
Pre-recorded male and female voice cues call out every phase and count down the final 3 seconds.
⌚
Apple Watch
Fully standalone Watch app. Works independently without your phone. Haptic feedback on every phase.
🎵
Music Friendly
Voice cues and beeps play alongside your music without interrupting it. Keep your playlist going.
🌗
Mono Mode
Switch between vibrant colour and high-contrast black and white with one tap — on phone and Watch.
📴
Works Offline
No internet, no account, no login. Open the app and train. Timer keeps running with screen off.
FAQ
Common questions
Yes — completely free, no ads, no subscriptions, no hidden purchases. Forever.
Yes. The Apple Watch app is fully standalone and runs independently. Leave your phone at home.
Yes. AmpHIIT works 100% offline. No internet connection required at any point.
Tabata is a form of high-intensity interval training (HIIT): 20 seconds of work followed by 10 seconds of rest, repeated across multiple rounds. One of the most time-efficient ways to train.
Yes. The timer runs in the background on both iPhone and Apple Watch, even with the screen off.
I'm a solo app and web developer from Canada and the person behind AmpHIIT.
I built AmpHIIT because I believe working out, losing weight, and living healthy shouldn't come with a hefty price tag. No subscriptions. No ads. No Wi-Fi needed. Just a clean, powerful Tabata timer that works on your iPhone and Apple Watch — completely free.
Building and maintaining AmpHIIT takes real time and effort. If it's helped you get moving, a coffee goes a long way toward keeping the app alive and improving it. Thanks for the support — it genuinely means a lot.
