Watch Tuner Lite 4+

Bartlomiej Swiatek

Designed for iPhone

    • 3.1 • 33 Ratings
    • $0.99

iPhone Screenshots


Watch Tuner Lite measures mechanical and automatic watches accuracy. Is uses the build-in or headset microphone to record audible ticks of the clock and calculates seconds-per-day deviation. It works with almost every 'ticking' clock.

Use in a quiet environment. Any ambient noises can affect result accuracy. Complete silence is the best.

Recommended way to record the ticks is to touch the crown of the watch with the headset microphone. You will get the best results using original Apple EarPods.

This is a simple version of Watch Tuner application. Not everyone needs detailed information about a watch movement, sometimes only accuracy is important. Watch Tuner Lite uses very similar algorithm like Watch Tuner does but displays only seconds-per-day deviation.

If you want to know how much your watch is fast or slow, this application is for you.
If you prefer to measure also beat error and amplitude, try Watch Tuner - a bigger brother of this app.
If you need frequency diagram look at Watch Tuner Timegrapher - the most sophisticated app of Watch Tuner series.

What’s New

Version 1.12

-minor fixes

Ratings and Reviews

3.1 out of 5
33 Ratings

33 Ratings

M-R S ,

Inexpensive solution to regulating watches

This app is easy to work. It just requires a little trial and error on the sensitivity slider to find the right balance and get a reading. However, it might not work well on all watches. On my Seiko with a 6R15 movement, it can pick up the ticking from any angle and with the case back still on. However, on my Seiko with a 7S26, the ticking is too soft and the app can’t pick it up with the case back on. Another small thing is that the accuracy is not perfect, it was around +/- 3 seconds when I compared what the app reported vs a 24 hr observation against an official atomic clock. This might be because the measuring time from the app is pretty short. Good enough for practical application though. This app was a game changer for me and allowed me to regulate my watch for a tiny fraction of the cost of getting a timegrapher. I look forward to trying it on a Swiss ETA movement, etc.

Mike in Oakland ,

The only review I’ve ever written

This worked exactly as expected. Like reallly really well. It’s obviously not a timegrapher, but if you use as directed you can set a Seiko 7s28 to within +\- 5 seconds/day or better.

I hid in a quiet closet away from my loud kids and opened the caseback, set my iPhone wired earbuds mic on the case, and got a signal no problem. The measurement is way more accurate than your ability to push the 7s28 regulating lever, so it takes a few tries.

I bought this thinking it might be a bust. It was so super good this is the only online review for anything I’ve ever written. If it’s not working for you, you’re not following the directions. The accuracy I have on an SKX007 is (for now) within 2 seconds/day and it feels like a million bucks because of it. Great job!


Works with the right microphone and settings

I was able to get a reading when laying my watch face down on my iPhone near the built-in microphone (in the lower left corner). It didn’t work when laying the watch on its side—not loud enough. This did not allow me to measure my watch in different positions.
I tried using my original AirPods, but that didn’t work at all.
I finally pulled out the wired headphones that came with one of my iPhones. I held the microphone part against the back of the watch with a wire tie wrap. Masking tape should work even better. I set sensitivity = 2/3, noise cancellation = on, and measuring time = long. This produced stable results in most positions. These generally agreed with my seconds/day measurements for 24 hours, but of course is much faster!

App Privacy

The developer, Bartlomiej Swiatek, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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