Timegrapher

What is Timegrapher? Timegrapher measures the accuracy of your mechanical watch.
The app uses your device's microphone to detect the ticking of your watch.

Features:
Detect BPH
Measure Beat rate
Measure Beat error
Measure Amplitude
Set Lift angle
Display beat noises real time (unlock, impulse and lock sounds)
Display accuracy and beat error over time
Share measurement
Save measurement
Track watch position and power reserve
Mange watches
Measurement statistics by watch and position
Measure magnetism

More features will be coming soon.