Wrist Tuner

A focused chromatic tuner for Apple Watch. See live frequency, the nearest note and octave, and deviation in cents on a clear flat-to-sharp display.

Support

For questions or help, contact cam.j.fitzpatrick@outlook.com. Include your Watch model, watchOS version, app version and a description of the issue.

Getting started

1. Open Wrist Tuner on your Apple Watch.
2. Tap Start and allow microphone access.
3. Play one note at a time. The meter shows whether it is flat, sharp or centered.
4. Tap Stop when finished.

A HELD reading is the last reliable measurement as a note fades. Listening stops when the app becomes inactive or is interrupted; tap Start to resume.

Compatibility

Requires watchOS 27 or later. Supports C2–F5 (65.41–698.46 Hz) with A4 = 440 Hz. The app measures single notes and does not separate chords. Piano measurements are limited to notes within the supported range.

No account or internet connection is required for pitch measurement. Audio is processed locally on the Watch without recording or transmission.

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