Watch Tuner Timegrapher

Does not work properly with Samsung headset used with an IPad Pro. Maybe you have to use an Apple headset. Very difficult to adjust sensitivity

I was a little hesitant to buy this app, given the mixed reviews. But I went for it and I’m glad I did. The app works. I used my stock iPhone headphone mic (laid across the back of my watch case) and made sure I was in a very quiet room. The app had no problem picking up the beat from my watch. Increasing the sensitivity setting helped when it was struggling to gather data for the amplitude reading. This isn’t a replacement for a dedicated Timegrapher, but it’s way less expensive and is a great way to check on the health of your mechanical watches. I suspect the people who’ve struggled to make the app work either didn’t have a great mic, or weren’t in a quiet enough setting.

Unfortunately, I had high hopes for this app but despite using two different microphones, it does not pick up a beat. Save yourself close to $20 and put that towards a real time graphing machine. Apple refuses to refund money and suggests going to developer. Click on download my mistake to get your money back instead.

While no watchmaker I’m mechanically inclined enough to conclude that this app without a contact microphone is not accurate enough to really tune a watch. For the average user it will be hopeless. I used a high quality lapel mic touching various parts of the watch. After a few minutes of adjusting settings I was able to get a reading but it did not seem repeatable. The window to even get a functional reading is very small. This needs a smarter auto range search so there is zero user input needed.

Does need super quiet conditions, but super accurate and lovely interface.

The beat error readings are inaccurate, which makes the graph that the app displays useless. The amplitude readings are also inconsistent with the readings from a proper timing machine. The frequency of the watch is most often identified correctly and the rate readings are usually within a few seconds of the values that a Witschi displays.

Just used this app to successfully regulate my watch from 1ms to .4ms of beat error and gaining 18 seconds per day to only 1! Intuitive, easy to use, adjust settings for sensitivity were helpful, especially after my kids got home from school and started making noise in the house. Used it iPhone headphones and it worked great!

Just bought & installed the App on my iPhone. I then connected the Apple Earbud with the built-in microphone. Initially, the App had difficulties acquiring the sample signal. It is either not able to acquire the signal at all or, when I turned-up the sensitivity, it became "too noisy". After some trial-and-error, I had great success by putting some Blue-Tak to hold the microphone in place making sure that the microphone is "ON the watch" with the Blue-Tak at the side to just hold it in place. I then cover the entire watch with a big soft pillow muffling the ambient sound. Wow!!!! the App works perfectly. I tested it with 3 of my mechanical watches for which I know "roughly" the error per day. The App was able to provide what I believe to be very accurate reading (of course, I don't have another instrument to calibrate this App). However, for $6.99, this App functions as expected. It is good for simple household use to provide a reasonable measurement of the performance of the mechanical watches & enable simple regulation to be done at home. Highly recommended!!!

This is a bargain at $4. After playing with the settings, I got good results. But I do have a couple of complaints. First, when results are stored in history, my iPhone XR does not show the complete time because the screen is not large enough to show the seconds and there is no dynamic zoom to change the display size. My second complaint is that there seems no way to share the graph, print it, or output it to email. Still, I can recommend the product, but I had to subtract a star in the rating. Update: I’ve lowered my rating by one star because the app apparently cannot store more than 16 history files. After that, the save button is grayed out.

Genuinely shocked at how well the app works, off the bat with the original settings it worked great, just use the apple ear buds with the microphone and set on top of the movement and it works a charm