Love WatchTracker
Really great app. I use it all the time to set my watches but also to record ownership of those that have come and gone. I use the data points to as it tells you if your watch is running fast or slow and it it super easy to use all the functions too. Well done to this developer, it’s brilliant.
Very good
Great app for tracking watch accuracy. Just a shame it doesn’t sync between multiple devices. Other than that, all good!
Love it!
I’ve been using this app for years to keep track of all my watches. I can easily see if they’re running fast or slow and change the position I leave them in at night to “regulate” them. A watch nerds dream.
Thank you!!
Thank you!!
Very accurate
I’m very pressed on how a accurately this apps tracks my watch, well done.
I just wish the UI would be a bit nicer and more intuitive
I just wish the UI would be a bit nicer and more intuitive
Works great
Intuitive interface. Much better than the other apps i tried
Was a great app until the data corrupted
I've been using this app for almost 2 years, and randomly I lost all my data. Unfortunate, it was interesting to see how accurate some of my watches were over the years. I'll still use it because it works well for tracking watch health, but I won't count on that long term data (the cloud had the data corrupted as well)
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Still the Best After All These Years
I’ve used this app for many years. The last review I wrote—also many years ago—no longer appears on the review list. I actually love this app so much that I’m writing another review to compliment the developer and to explain why some reviewers, although in small numbers, may have found the app inaccurate or hard to use.
This app is not a timegrapher that gives instant readings on your watch’s rate. Instead, it collects data points by having you match your watch’s time to the app’s time (or atomic time). Using at least two reference points, the app then calculates, graphs, and tracks your watch’s rate. You can start a new time run anytime you adjust your watch, and you can also track multiple watches with the app.
The only real requirement for accuracy is having quick reflexes—because you need to tap the screen when your watch shows the exact time displayed on the app. If you can’t tap within about 0.2 to 0.5 seconds of the shown time, the results might not be as accurate or meaningful.
Whether you’re a casual collector or a serious watch enthusiast, this app is a must-have if you care about tracking your watch’s accuracy over time. It’s easy to use and gives you detailed insights into how fast or slow your watch is running—something any watch lover will appreciate.
This app is not a timegrapher that gives instant readings on your watch’s rate. Instead, it collects data points by having you match your watch’s time to the app’s time (or atomic time). Using at least two reference points, the app then calculates, graphs, and tracks your watch’s rate. You can start a new time run anytime you adjust your watch, and you can also track multiple watches with the app.
The only real requirement for accuracy is having quick reflexes—because you need to tap the screen when your watch shows the exact time displayed on the app. If you can’t tap within about 0.2 to 0.5 seconds of the shown time, the results might not be as accurate or meaningful.
Whether you’re a casual collector or a serious watch enthusiast, this app is a must-have if you care about tracking your watch’s accuracy over time. It’s easy to use and gives you detailed insights into how fast or slow your watch is running—something any watch lover will appreciate.
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5 stars
This is a very good and reliable watch timing app. I have been using it for years.
Brillant! 👌🏻
Simple, efficace et facile d’usage. Cette application permet de quantifier la dérive d’un mouvement sur une très longue période. 😉
Doesn't work
Complete waste of money , doesn't work with 26.2
Great Tool to track all watches
I am using this app for years and years, and it helps me to track the precision of my watch collection, the effect of different wearing conditions , and so on.
It can even track high precision Quartz watches in the seconds per year range, albeit you have to send the author a short note and ask for individual activation. This feature really should be integrated in the standard festure set.
Strongly recommended app!
It can even track high precision Quartz watches in the seconds per year range, albeit you have to send the author a short note and ask for individual activation. This feature really should be integrated in the standard festure set.
Strongly recommended app!
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Great app (but broken on iPhone 16 pro - FIXED)
Been using this for a few years now on various devices without complaint. It’s broken on my iPhone 16 Pro though. Works for a few days before opening it results in a black screen and eventual crash. Only way to fix it is a reinstall and the cycle starts again. Doesn’t happen on my iPad Pro ever. I sync with iCloud so maybe something to do with that. Frustrating though.
Update: worked out that if I close the app on iPhone, log a new data point on a timing run on iPad and then open the iPhone app afterwards, it’ll work again. Maybe corrupted data that the forcing of an iCloud sync (with the adding of the new data point) is fixing/repairing?
Update2: The recent update (Nov/Dec 2025) seems to have done the trick. No issues since.
Update: worked out that if I close the app on iPhone, log a new data point on a timing run on iPad and then open the iPhone app afterwards, it’ll work again. Maybe corrupted data that the forcing of an iCloud sync (with the adding of the new data point) is fixing/repairing?
Update2: The recent update (Nov/Dec 2025) seems to have done the trick. No issues since.
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Perfect
Has an atomic clock setting to help set the watch, tracks all my watches, does timing runs, it’s exactly what I wanted. I’m happy.
Not working with iOS 26
This stopped working when I upgraded to a new iPhone 17 Pro and iOS 26. Crashes on start. Beware. I’ll update the review to 5 stars if they fix it.
The perfect app?
Just what you need and everything that you need. Very satisfied also of the developer quick response to my questions about atomic time. I’m confident now about the high quality of data, and it’s also really fun to use this application. Excellent design and implementation.
Great app but broken on iPhone 16 pro
Been using this for a few years now on various devices without complaint. It’s broken on my iPhone 16 Pro though. Works for a few days before opening it results in a black screen and eventual crash. Only way to fix it is a reinstall and the cycle starts again. Doesn’t happen on my iPad Pro ever. I sync with iCloud so maybe something to do with that. Frustrating though.
Update: worked out that if I close the app on iPhone, log a new data point on a timing run on iPad and then open the iPhone app afterwards, it’ll work again. Maybe corrupted data that the forcing of an iCloud sync (with the adding of the new data point) is fixing/repairing?
Update: worked out that if I close the app on iPhone, log a new data point on a timing run on iPad and then open the iPhone app afterwards, it’ll work again. Maybe corrupted data that the forcing of an iCloud sync (with the adding of the new data point) is fixing/repairing?
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Great app but broken on iPhone 16 pro
Been using this for a few years now on various devices without complaint. It’s broken on my iPhone 16 Pro though. Works for a few days before opening it results in a black screen and eventual crash. Only way to fix it is a reinstall and the cycle starts again. Doesn’t happen on my iPad Pro ever. I sync with iCloud so maybe something to do with that. Frustrating though.
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Excellent
A perfect app for tracking watch accuracy! I’ve been using it for years now. It works flawlessly and provides lots of great data (including graphs). Design wise it’s quite simple but it doesn’t need a fancy UI, it does everything it needs to and does so very smoothly. Would highly recommend.
Perfect for tracking watch accuracy over time
I use it for all of my watches to track how reliably they keep time and if they need regulation. Easy to use.
The tool you need
if you want to keep track of your watch’s performance!
