Watch Tuner Lite

Not very accurate, works occasionally

Keep it in a quiet area and adjust the sensitivity and it’ll help you get the right time set. Intuitive and simple, set +- 2 seconds for my 1913 Elgin that I’m sure fluctuates more from temperature than this can fix.

This app works like a charm to adjust watch accuracy with the help of apple earbuds it accurately measures time error of your time piece instantly allowing you to adjust your watch to the correct speed in one setting. What an amazing tool!!!!

Works well for me, and given that the selection of apps with this functionality appears to be relatively limited, I’m thankful that someone programmed it so that I avoid buying a 200USD “timegrapher” (which I don’t need for my purposes). The alternative app implementations (of which there appears to be many), where you basically time it yourself based on a visual observation, I find somewhat ridiculous. I placed the watch Caseback or Chrystal on top of the microphone (located a bit down the co

Unlike the many other apps that time watches, this one tells you your watch accuracy within seconds not hours or days. Based on the same principles actual professional watch accuracy instruments work, this app with the help of your earbuds microphone allows you to make adjustments to your mechanical watch movement and immediately check for the change in movement’s accuracy. It is incredible how well this app works without any additional expensive sensors. Thank you so much for developing this!!!