I am a watchmaker looking for a developer to create an app which displays the rate in seconds (how fast or slow in seconds the watch is keeping) of any given mechanical watch.
Similar to the Kello app on the iPhone, the app will work when the mic on the Apple device is placed on the watch. The mic picks up the small vibrations from the watch and calculates the expected rate. A professional timing machine will be provided to calibrate the app.
More information on request.