Watch Tuner Lite

Not very accurate, works occasionally

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!

Make all the adjustments you want, it’s +329 s/d.

I don’t normally leave reviews but this warrants one! I tracked my watch visually by atomic time clock but hated the eyeball variance and waiting lol … I didn’t want to shell out hundreds for a pro watch timegrapher, either. I went out on a limb and paid the small fee for this and using Apple EarPods I never use this worked flawlessly!! Detected BPM, and it appears it validates my eyeball atomic method, but can be done in just a minute or two. Top work to the developer; this is one must have cool little app :-)

I tried this on a variety of watches. I tried watch crown to iPhone microphone. I tried wired iPod microphone. I turned sensitivity up and down. Noise cancelling on and off. I could not even get a remotely accurate measurement of beats per hour. I get too much noise or no signal. Two days of fiddling. Also does not work even with the case back taken off of a noisy watch.

I was a little bit skeptical before I got it, but it turned out to work well. Of course, it is less accurate than a Timegrapher for $100+, but it gives you excellent results nevertheless. The main hint is to put your watch and the mic into a box (preferably with thick walls), so it will catch far less noise than in an open environment (I used my Bose headphones case for that), and keep your phone outside the box to read the measurements.

While learning about how to regulate my mechanical watches, I game across this app. Buying a dedicated timegrapher seemed impractical. I used it to regulate the 7s26 movement in my Seiko SKX013. At first it gave me some strange results, but after playing with the microphone sensitivity it was reporting roughly what I’d been observing. It worked well using the built in microphone on my iPhone XS about 1 cm from the case (with case back on). I had the phone and watch on a desk on a mousepad in a very quiet room. I think a help screen would be nice, but after fiddling with it, it’s pretty straightforward. This combined with Marc’s video on how to regulate a movement on the Long Island Watch YouTube channel were extremely helpful.

This app may be OK for a watch. I thought it would work also for a grandfather clock, but it isn’t. The app collects a certain number of ticks, and for a watch that’s a minute or two. For a tall clock, with 3600 beats per hour, this takes a l-o-n-g time. Not a good buy for clocks :(

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!

I would like a refund. This app is worthless. It took about 5 tries, 20-30 min each (before giving up) to finally have it give me a reading of -329 sec/day. That’s ridiculous. The test watch is -2 sec/day. Anyone know how I can get my money back, because I can’t get that last hour of my life back.