Measure your mechanical watch's accuracy using just your phone's microphone. Get professional-grade readings of rate, beat error, and amplitude — the same metrics watchmakers use.
Works with any mechanical or automatic watch. No downloads, no account required.
Rate
How many seconds your watch gains or loses per day. A well-regulated watch stays within +/- 10 seconds.
Beat Error
The symmetry of the tick-tock sound. Low beat error means the balance wheel swings evenly in both directions.
Amplitude
The arc of the balance wheel's swing. Healthy amplitude indicates good mainspring power and movement condition.
This tool is for mechanical and automatic watches only. Quartz watches do not produce audible ticks.