Cuckoo Clock Calibration

Works perfectly. My mantel clock used to gain about five minute a week. After using this app, it gains about 15 seconds a week which is pretty good for a clock that is about 90 years old.

This is a very well-made and genuinely useful app. I love how you can add profiles for different clocks that you own, too. I was able to get my over 100 year old Seth Thomas mantle clock ticking within a 0.04% margin of error (which is about 5-7 seconds off per day). If you have vintage clocks, I definitely recommend this app!

This is a great app for regulating a mechanical clock…not just cuckoo clocks, as the name would suggest! You do need to find out the proper beat frequency of the clock movement you’re trying to regulate (usually 60 BPM for grandfather clocks, but varies widely for other clocks). I have three requests that would make the app perfect for me: —please allow a frequency of 60.000 BPM! I don’t know why the app doesn’t allow this. I use 60.001 BPM for my grandfather clocks, which is close enough, but it’s kind of annoying to have to do so. —you should really repackage/rename this app to be for all mechanical clocks, not just cuckoo clocks. The cuckoo clock animation is cute, but I think more people would purchase the app if it were clear that this can be used for all mechanical clocks —it would be wonderful if the app would save the data once a measurement is completed. Making a slight noise to pick up the phone or to take a screenshot completely disrupts the completed measurement, and it disappears. Thanks for a great app!

Dials in a clock incredibly accurately.

I have a cuckoo clock that is not in the database, a Regula 35, a one day movement. Through trial and error I’ve got it pretty close to about 1min/day. I’m not about to try and count teeth on gears and pinions to calculate the pendulum rate but found I had to get a longer pendulum stick after cleaning and oiling. Don’t know why this was but after trial and error got it pretty close. Was hoping the developer might have a proper reference for that particular movement but here is the reference that I have developed for the Regula 35; BPH 6755.25. BPM 112.587. Period 532.919. I hope the developer will publish a corrected version but if not this is about as close of one that I can get. I hope this helps anyone with that particular movement. A great app and thanks.