Overtone: HIIT Interval Timer

Beeps over your music

Only for iPhone

Free · In‑App Purchases

iPhone

Beeps every interval on top of whatever you're playing, even with the phone locked. Free for 30 days, then a one-time unlock. No subscription. Overtone is an interval timer that stays out of the way of your music. Set a total time and a beep interval, or build rounds of work and rest. Press Start, lock your phone, put it in your pocket. The cues play over whatever you are listening to, without pausing it and without turning it down. BUILT FOR HIIT, CIRCUITS, TABATA AND TEMPO RUNS • Simple mode: total time plus a beep every X seconds • Rounds mode: work, rest, rounds, warm-up and cool-down, with a distinct cue at every change • 3-2-1 countdown ticks before each cue, and a get-ready lead-in before you start • Pause, skip ahead, or extend without breaking stride YOUR MUSIC KEEPS PLAYING Overtone mixes with other apps instead of interrupting them. Spotify, Apple Music, podcasts and audiobooks carry on at full volume. ON THE LOCK SCREEN AND IN THE DYNAMIC ISLAND See the current phase and the countdown without unlocking. Pause and resume from the Live Activity. YOUR SOUNDS Pick from built-in chirps, beeps, bells and gongs, or record your own three-second cue with the microphone. Yes, you can make it your own voice. FREE FOR A FULL MONTH, THEN ONE DOLLAR Everything is free for 30 days. After that, a single one-time purchase unlocks Overtone forever. No subscription, no ads, no account.

Ratings & Reviews

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Taps that didn't register now do. The Simple and Rounds switch responds to a tap anywhere on it, not just on the word, and so do Stop, Record your own, and the Play back and Discard buttons.

Version 1.0.2

The developer, MATTHEW KA YEUNG KWAN, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    MATTHEW KA YEUNG KWAN
    Size
    2.8 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Matthew Kwan
  • Developer Website
  • Privacy Policy

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