Twelve O'clock Watch Accuracy

Take That Design

In-app purchases

About this app

Twelve O’clock is an app that helps track your watch accuracy easily in a realistic way.

I can’t stress this enough: it’s “tracking”, not measuring instantaneous accuracy like a timegrapher device.

It’s a manual and oldschool job but it brings so much fun. It reminds me of the old days when I had to synchronize my watch to the clock on the TV at 7pm every day.

With Twelve O'clock you can:

** MANAGE YOUR WATCH COLLECTION

* Add, edit, remove any item in a list of your watch collection
* Include a nice wristshot of each watch


** KNOW YOUR WATCH ACCURACY

* Simply add some checkpoints and let the app calculate the accuracy in *second per day*
* A nice chart of the accuracy over the time

** LEARN MORE ABOUT HOROLOGY

* Curated content for watch lovers (like me)

Ratings and reviews

I loved it until my data disappeared. I was using this app daily to track several watches. When I opened the app today, 27-March-2025, all of my data was erased. the app appeared to have updated with a newer look and it went through the first time user tutorials again. I still have the "plus" version, but now I have to start all over. UPDATE 28-March-25 after another update my data was restored. thank you for working on it so quickly!

13 Mar 22-After 24 hours of use, doing a few measurements and setting up my watches, the app deleted all the watches and baseline data and secondary points with no notice. I'd recommend setting it up to automatically backup via google drive or one drive like other apps that do this same thing. Update: 26 Feb 23-Export of data does not work, which continues the above noted issue. Not only is there no auto backup option, but the manual backup doesn't work. Recommend fixing and pushing update.

Visually it looks nice, but I've had a better functional experience with other watch tracking apps. Doesn't follow the average drift of the watch (say my watch is 2 minues fast after a few weeks, I always need to increment that diff on every check), doesn't sync with NTP or GPS time and only relies on the phone time which can drift significantly, especially when in areas with low/no signal. There's significant room for improvement. Looking forward to the next updates.

What’s new

Bug fixes and performance improvements