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TickTock

Pendulum clock beat asymmetry analyzer
TickTock is an open-source Android app that helps set the beat of a pendulum clock.

KEY FEATURES:

  • Real-time beat tracking from microphone audio

  • Period measurement in milliseconds

  • Asymmetry measurement in milliseconds and percent

  • Gauge visualization from -25% to +25%

  • Color-coded asymmetry indicator for quick feedback

  • Start/Stop acquisition with live status text

  • Live G: indication of the automatic gain-control multiplier; the value freezes after fit lock

  • Beat-log export with 0.1 ms precision



USAGE:

  1. Set the initial guess period (default 1200 ms)

  2. Tap Start and grant microphone permission

  3. Wait while TickTock locks to the beat

  4. Read Period, Asymmetry [ms], and Asymmetry [%]



OPEN SOURCE:
Licensed under GNU GPL v3.0 or later.

Source code: https://github.com/leodp/TickTock

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.08 (9) suggested Added on Oct 25, 2026

    This version requires Android 11 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • record audio
      This app can record audio using the microphone while the app is in use.
    • com.ticktock.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.2 MiB PGP Signature | Build Log

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