Clock Tuner

BuzzSoft

In-app purchases

About this app

A Timegrapher

This app is to measure the BPH(Beats per hour) of mechanical watches.
It will display time error per day as well.

The app uses microphone to measure BPH.

** Recommend to plug a microphone into phone and attach the microphone to the back of your watch.
** Basic version display wave graph and pulse interval histogram.
** Frequency display requires 'Premium' upgrade.

** Please test the app with your watch before you purchase 'Premium' upgrade. The app will work as Premium during 30 min.

Not for digital clocks.
Not working in noisy environment.
Set microphone direction toward a clock.

- Review from Mr. Kojima
http://www.thewatchsite.com/index.php/topic,42142.0.html

- Preset example
Rolex or mechanical watch: Target frequency: 4 or 5Hz, Sample duration: 2Sec, Sensitivity: manual 50
Most pendulum clock: Target frequency: 1 or 2 Hz, Sample duration: 5 or 10 Sec, Sensitivity: medium

FAQ.
1) in the settings there is a sensitivity option with a high, medium, low and 3 manual settings, can you explain how this changes the results

It determines sound amplitude threshold for detecting clock sound. If your clock sound is loud you may reduce sensitivity. This will allow more environmental noises.
If you increase the sensitive, you may measure hand watches. But small noise may measurement errors.

2) why does the detected frequency change between light grey, black and red
Red means smaller drift during the measurement interval while grey means that measurement may have an error.

3) the average frequency does not always calculate, it stays at NaN
The 'detected frequency' should be red continuously.

4) how do you calculate the pulse drift %
abs(max detected frequency - min detected frequency) / detected frequency during 1 detection cycle.

5) what are the 2 graphs showing and what data are you using for the calculations
The size of bars in the upper graph should be almost the same.
The bottom shows amplitude of sound wave recorded from micro phone.

6) are newer versions of the app being developed

** You may provide sound sample by sending wav or mp3 file to [e-mail]

Ratings and reviews

this app doesn't work. i'm trying to tune a grandfather clock. the app records all the ticks properly but doesn't give me ANY useful info. it looks like the app is supposed to show actual frequency, beat error, etc, but nothing happens. all it does is show a plot of the recorded ticks. once got it set for 60 bpm, and high sensitivity. nothing but the plot. i wish it would work.

Don't waste your money, it's a scam. Looked good at first but after paying $4.99 for the full version and using it a while, I noticed that everything is either dead on or +/- 7, 15, 21,28, 35 etc. seconds per day. Tried several watches from 18-28.8kbph and with the exception of 15, the error rate was always in multiples of 7. Their website is dead, no response from the email either....

Excellent app. It only gives you a 30 minute free trial, but it's well worth the $5 to upgrade and keep using it. Using this app and the built-in mic on my Galaxy S8+, I was able to very easily regulate my 1980s Vostok Amphibia from -500s/d to -4s/d. It works very well so long as you're in a relatively quiet environment. I recommend fiddling with the settings some while timing a baseline watch (that you've already timed using some other method) so that you know you're getting an accurate reading.

What's new

Chart drawing bug is fixed.