iPhone Screenshots


Watch Tuner is a mechanical and automatic watch testing application designed to measure following parameters:
- rate
- beat error
- amplitude
- beats per hour
The application uses the build-in or headset microphone to record audible ticks of the watch.

You can measure now with your iPhone the quality and stability of the rate accuracy, amplitude and beat error of mechanical watch movements. You can also take advantage of results history.

Use in a quiet environment. Any ambient noises can affect result accuracy. Complete silence is the best.

Recommended way to record the ticks is to touch the crown of the watch with the headset microphone. You will get the best results using original Apple EarPods.

If you don't need such advanced tool as Watch Tuner and all you need is to the check rate accuracy, maybe it's worth to try Watch Tuner Lite - a little brother of Watch Tuner application.
If you need frequency diagram look at Watch Tuner Timegrapher - the most sophisticated app of Watch Tuner series.

What’s New

Version 1.10

- BPH detection algorithm fix
- adjusted rate calculation parameters for better results

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

Smegmakovitch ,

Gives wildly different results for the same watch!

I placed the Apple earbud microphone against the watch crown in a quiet room as instructed, and adjusted the sensitivity slider until the measurement "quality" readings were 100% before saving the results. I did this four times for the same watch, which is only a couple of months old, and got rate readings of -5.9, -2.3, -4.4, and -1.6 seconds/day.

I don't think that this app is accurate enough to be useful.

CDR8977 ,

Exactly what I hoped it would be!

Very informative and easy to use. Much better than trying to adjust a watch movement using the guess and wait method. This is my new favourite app! Thank you so much for developing this!


Bartlomiej Swiatek
726 KB

Requires iOS 8.4 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 2015 Bartłomiej Świątek


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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