ClockMaster - Time Regulator

This app helped me resetting a grandfather clock I had to disassemble and clean &amp; oil. The iPhone ear buds work far better than the internal Mic which is almost useless. A clip-on piezoelectric pickup would be much better still. <br/><br/>They only thing I don't like is that only an absolute delta is shown. It works be most helpful if there was some indication of which half of the cycle was longer/shorter when adjusting the balance. I ended up using a flashing metronome to tell me whether I had to tighten or loosen the pendulum leader offset. Lose one star for this deficiency.<br/><br/>I've tried a couple other apps but this is spot on. I would highly recommend.

Followed the directions, used the earbud microphone, app did not reliably measure the clock tick. Looks like you would really need the $20 upgrade for this $10 app to really do anything useful.

I have a very old Seth Thomas 30 day gallery clock and I was able to easily set the beat and calibrate the time. Thanks for the great app.

This has become my go-to app when I'm fine tuning a clock, whether it be a perfect tick-tock or getting it timed to as little gain/loss per day. It has been frustrating in the past as the app didn't support my iPhone 5-5S, I had to resort to an old 4 for it to work. Just tried it on my 6S+ and had no problems!<br/> I haven't upgraded to pro yet but I am interested as I have a piezo microphone with a 3.5&quot; jack and instead of using my small amp next to my phone I'd love to be able to plug it into my phone and reduce the background noise. $20 is hard to swallow though. Now if it were say $5...

I question how useful this app really is. It’s fine for getting a clock on beat but only by taping the Apple earbuds so the microphone is taped to the metal of the movement.<br/><br/>I purchased the mic they recommend and it’s huge and the sensor doesn’t touch the movement due to it’s odd shape so it picked up NOTHING.<br/><br/>I purchased the pro version and it really didn’t make much difference.<br/><br/>If you just want a way to set it on beat while in your shop it’s fine but it doesn’t exactly look professional to be taping your earbuds to someone’s grandfather clock while your in there home.<br/><br/>There has to be a better way.<br/><br/>I didn’t have good results timing a clock but that may be me.<br/><br/>It has soooo much potential but it needs a mic that works with it.

We bought a used Howard Miller grandfather clock that had not been running for a long time. I cleaned it up and used this app to get it in proper beat and regulation. Awesome app! So much easier and accurate then using a stopwatch or counting the beats to set the clock.

I used this to calibrate my cuckoo clock. It picked up the pendulum clicks just fine using the internal mic, with no need for an external mic or sensor. I'm definitely no horologist, but this seemed to do the job. When I had a problem due to an iOS version issue, the developer responded within a few minutes and had a fix quickly.<br/><br/>It would be nice to have plots to look at drift rate and periodic error. These are available in the Pro version, but even in that it will not make plots - just allow you to export the data to a file to be viewed elsewhere. Would be better to have the plots right in the app.

I inherited a 114 year old Ithaca grandfather clock with a Griffith movement and used this program to tune the movement. After getting into the clock, I found that it was not set up correctly and didn’t work at all. After figuring out how it was supposed to be set up, I used the program to set the beat and regulation. I started out with zero knowledge on how a clock works and muddled through the process with the end result being a clock that keeps time. Hurray.<br/>The only issue I had was that the auto function for estimating the target rate (for BPH) did not work on this clock at all. I did calculate the actual BPH from counting the number of gears and pivots in the gear train and with the correct BPH imputed, the app worked perfectly. I did splurge on the external Peterson pitch grabber which was money well spent($15 at Amazon).