Timegrapher X 4+

I just got a used older automatic watch to learn how to work on watches as a hobby. As is, it was running 5 minutes ahead every day. I needed something to adjust it, but didn’t want to spend the $200 or so for the standalone equipment, or even $50’ish for a Chinese knockoff. After watching some “how-to’s” on You Tube, I got this app and got my unopened and almost forgotten Apple earbuds out of the iPhone box. The app picked up a weak signal right away, and had a strong signal after I got the microphone into a good position. It automatically determined my watch settings. As I worked, the graph display immediately told me if I went the wrong way or too far. In 5 or 10 minutes I got the errors down to below 5 seconds a day, mind you, a beginner working on such a small scale for the first time, with the final adjustments essentially too small for me to see. A day later the watch is still running within a few seconds of my iPhone clock. Now I can buy a few more watches to fix up, wear, and keep adjusted, in no small part because of the low cost of this app. Very, very cool… and fun too… Thank you for this app.

Thank you! Glad you like it!

I’ve struggled with other apps that are either too sensitive or not sensitive enough and that can take a lot of time to get a useful measurement. Timegrapher solved those problems, and I am more frequently regulating my watches because of its ease of use and the good results I get.
It is important to use the microphone on a pair of wired buds. I used small strips of gaffer’s tape to hold the microphone to the back of the watch. The app developer recommends placing it on or next to the crown.
Avoid using the phone’s built-in microphone since your results will not be good and since the magnetic field of the phone speakers next to the built in mic could magnetize parts of your movement.

Thank you! We have posted a video showing different ways of using the mic at https://timegrapher.app

I was originally annoyed at the pricing model and still believe the developer should be more clear. The Pro version is $60.

But that’s where the annoyance stops. This app is rock solid and extremely accurate. A quiet room is all that’s required… and it can even tolerate a little background noise.

Note to Developer: although the app still runs flawlessly, it’d be great to feel a little love from time to time to let us know you’re still around :)

Thanks for the updated review. Much appreciated! A minor update coming in January.