Interval Timer

Master your HIIT interval training with Interval Timer, the customizable workout companion that tracks your high and low intensity periods with precision. Whether you're crushing a cycling session, running sprints, lifting weights, boxing, MMA, or stretching routine, this training timer adapts to your exact workout structure so you can focus on performance, not timekeeping.

Take control of every aspect of your interval training. Set your own number of rounds, customize countdown and set durations, and define exactly how long your high-intensity pushes and low-intensity recovery periods last. You decide the rest time between sets, choose whether to start with a low or high interval, and tailor sound and vibration feedback to match your preferences. Whether you're using this as a HIIT timer, tabata timer, round timer, or any other interval training format, you have complete flexibility to match your training protocol.

Keep your workout flowing without interruption. Interval Timer runs in the foreground, background, or even with your device locked—so you can dim your screen to save battery while staying on track. The app won't stop counting down when you lock your phone or switch to another app, meaning your timer keeps working during your rest periods and transitions. No fumbling with your phone between sets; just train.

Fine-tune every detail to your workout style. Adjust the overall countdown time, control sound volume and timer notification sounds, toggle vibration alerts, and choose whether the app should auto-lock after a set completes. Pause during rest periods if you need a breather, or let it run automatically. Each new set can be customized independently if your workout structure changes. All these options live in one intuitive settings screen.

Enjoy the freedom to customize your audio experience by adding a playlist from your phone's music library—Interval Timer reads your stored tracks to let you train to the songs you love. The app also offers both an ad-supported free version and a premium ad-free version available as an in-app purchase, so you can choose the experience that suits you best.

Interval Timer is built to support every type of interval-based training, from competitive athletes to fitness enthusiasts just starting their journey. Download today and transform how you structure your workouts.