Interval Timer

Your workout, your rules – and your data stays on your phone.

Interval Timer is a clean, modern timer for HIIT, Tabata, circuit training, running intervals, stretching or any workout built from work and rest phases. Set up a routine in seconds, hit start and focus on your training. The big countdown and clear phase colors tell you at a glance what's next, even from across the room.

🔒 PRIVACY FIRST

• No account, no sign-up

• No tracking, no analytics, no ads

• Your workouts are stored only on your device and never uploaded or sent anywhere

• Works completely offline

⚡ CREATE WORKOUTS IN SECONDS

• Simple editor: sets, preparation, training and rest – done

• Advanced editor: multiple blocks, repetitions, warm-up and cool-down, custom names for every interval

• Add a short description to each workout

• Duplicate, reorder and share workouts or import them from a file

⏱️ TRAIN WITHOUT DISTRACTIONS

• Large, easy-to-read countdown with progress ring

• A distinct color for every phase: prepare, train, rest

• Sounds, voice announcements and vibration so you don't have to look at your phone

• Keeps running in the background and with the screen off

• Your music keeps playing – Spotify & co. just get quieter during announcements

🎨 MAKE IT YOURS

• Pick your own colors and sounds for every interval

• Material You design with dark mode

• Compact list view for many workouts

• Start your favorite workout straight from a home screen shortcut

100% free. No ads, no subscriptions, no paywalls. If you like the app, you can support development with an optional donation via Google Play.

Have fun training! 💪