Set the timing for each exercise
Squats for 45 seconds, push-ups for 30, a short rest between them, or none at all. Each exercise has its own get-ready, work, rest, and repeat count, so one workout can mix fast drills and long holds.
Interval timer for Android
A different work and rest time for every exercise
Build HIIT, Tabata, EMOM, circuit, boxing, running, and yoga workouts. Voice and sound cues guide you, even with the screen off.
Free, with a small ad banner. No account. No subscription.
No account, no subscription, works offline
Install it and start a workout. There is nothing to sign up for and nothing to unlock. Your workouts and history are stored on your phone, and the timer runs without an internet connection.
Keeps going with the screen off
Lock your phone or switch apps. A voice announces each exercise and whether it is work or rest, a 3-2-1 beep marks every change, and a notification shows the current interval.
Presets, history, and sharing
Start from ready-made workouts: HIIT, Tabata, EMOM, yoga, boxing rounds, and run/walk intervals. A calendar keeps your history, with streaks and estimated calories. Share any workout as a code that a friend pastes into the app, with no sign-up.
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Ready-made workouts -
History and calendar -
Results after each workout
Questions and answers
Is Interval Assistant free?
Yes. The app is free and shows a small ad banner. There are no subscriptions and no in-app purchases.
Do I need an account?
No. Open the app and start a workout. There is nothing to sign up for.
Does it work with the screen off?
Yes. The timer keeps running when the screen is off or you switch apps, with voice and sound cues and a notification showing the current interval. If your phone stops apps in the background, turn on Run in background in the app's settings.
Does it need an internet connection?
No. The timer, your workouts, and your history work offline.
Can each exercise have its own work and rest time?
Yes. Every exercise has its own get-ready, work, rest, and repeat settings. You can also repeat the whole workout for several rounds.
How are calories calculated?
Calories are an estimate based on the body weight you enter and standard activity values for work and rest. Treat the number as a rough guide, not a measurement.
How do I share a workout?
Open a workout and tap Share. The app creates a message with a workout code. The other person copies it and pastes it into Import workout.
Is there an iPhone version?
No. Interval Assistant is available for Android only.
Get Interval Assistant
Free on Google Play for Android phones.