Very presice result. But I hope add history feature on Timegrapher version. I hope to save time graph history.
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Watch Tuner Timegrapher is a mechanical and automatic watch testing application. It displays the frequency diagram of the watch and measures rate, beat error, amplitude and beats per hour.
The application uses the build-in or headset's microphone to record audible ticks of the watch. Use in a quiet environment. Any ambient noises can affect result accuracy. Complete silence is the best however noise cancelling algorithm can help to eliminate not very loud sounds. Recommended way to record the ticks is to touch the crown of the watch with the headset microphone.
If you don't need the frequency diagram, look at Watch Tuner app. If you want to test only the rate accuracy, try Watch Tuner Lite.
If you have any questions, suggestions or any troubles using this app - don't hesitate to write me.