Hairspring

Hairspring

By Jinfei Sun

  • Category: Utilities
  • Release Date: 2015-03-30
  • Current Version: 2.0.0
  • Adult Rating: 4+
  • File Size: 7.33 MB
  • Developer: Jinfei Sun
  • Compatibility: Requires iOS 8.0 or later.
Score: 3.5
3.5
From 39 Ratings

Description

Hairspring turns your device into a powerful mechanical watch timing machine. It measures the precision of mechanical watches, with an accuracy of at lease ±1s/day, by analyzing the tick-tock sound using the microphone of the device. It supports a wide range of frequencies, covering almost all mechanical watches available on the market: - 14,400 VPH - 16,200 VPH - 18,000 VPH - 19,800 VPH - 21,600 VPH - 23,400 VPH - 25,200 VPH - 28,800 VPH - 36,000 VPH In case you don't know your watch's frequency, you may use frequency auto detect. The measuring time can be set from 30 seconds to 3 minutes, to get a balance between response time and accuracy. An oscilloscope shows the audio waveform in real time. It's quite handy for monitoring the status and diagnosing some common problems. The result is plotted in a chart, which can be saved for later reference. Also, it can record and save a long-time measurement, e.g. for 12 hours, to analyze the long-time performance of the watch. To use Hairspring, just place the microphone tightly close to the watch back, then set the parameters. After collecting enough data, the result will be shown. A detailed usage guide can be found here: http://www.diversminds.com/Hairspring/Hairspring.php

Screenshots

Reviews

  • DOES NOT WORK

    1
    By Hazem E
    Don’t bother - it doesn’t work! I tried many ways to make it recognize the sound and it fails at the data collection stage!
  • Crazy fluctuations. Infuriating beyond belief.

    1
    By kevinc1218b
    DO NOT BUY! The readings are accurate for around 10-20 seconds. You sit for 2 minutes patiently and then suddenly it goes from normal +6 for example up to +400 seconds. This is obviously a serious error on the app. Then it goes down to -300. The only way you can “re-synchronize” is if you go to settings and change the measuring time to another time frame like 30s to 1 min. Then it reads well for 20 sec and then goes crazy again. This is absolutely infuriating. If you breathe too loud, drop a pen, or even move around in your chair. The readings go ballistic. Without exception the most infuriating timegrapher app I have used.
  • Crazy Variances and Infuriating to Use

    1
    By kevinc1218
    The app is accurate when it does read. Use the Apple headphone mic or another plug in headphone mic. Bose for some reason doesn’t work well. The readings are accurate for around 10-20 seconds. You sit for 2 minutes patiently and then suddenly it goes from normal +6 for example up to +400 seconds. This is obviously a serious error on the app. Then it goes down to -300. The only way you can “re-synchronize” is if you go to settings and change the measuring time to another time frame like 30s to 1 min. Then it reads well for 20 sec and then goes crazy again. This is absolutely infuriating. If you breathe too loud, drop a pen, or even move around in your chair, any sound like a bird chirping makes the readings go ballistic. Without exception the most infuriating timegrapher app I have used. Just buy a $150 timegrapher on Amazon and return it when you don’t need it.
  • Works amazingly well

    5
    By DS1951
    I was skeptical but figured I would give this a shot. The instructions (and some other reviews) say you should use the headphone mic in a very quiet place, but I wasn’t patient enough to wait, so I put my iPhone directly on an Omega Seamaster 300 Master Co-Axial (there was also a fair amount of background noise). It immediately detected the (very unusual) 25,200 vph rate and after 30 seconds came out with a time of +2.2 which is almost exactly what I got manually timing it off the atomic clock. The fact that it immediately recognized the beat rate really impressed me. There’s virtually no other watches that use that so it was definitely not just an educated guess, and again this was a significantly less than ideal reading environment. Very cool!
  • Cool App

    5
    By W@kaMan
    Works for me first time, no problems. This is a very useful app for watch aficionados.
  • Great app for general purpose time graphing

    5
    By Scottf29
    I very much appreciate this app. This app has helped me get my collection of Seiko 5’s and a Seiko JDM (SARB035) all to within the specs (between 0 and +10 seconds per day) I think it would be fair to say that this is no replacement for a real timegrapher. However if you’re like me and want to make minor adjustments in the regulation of your mechanical watch—this is an invaluable tool.
  • Does not work.

    1
    By Bobbycmusic
    This app does not work. It will either say no signal detected when it graph shows it is. Sometimes, it will say data is being collected but never goes completely through. It’s only $5 bucks but I’d ask for a refund if you end up buying it. Just save yourself the $5.
  • Extremely Helpful!

    5
    By arswaim
    This app is extremely helpful. Despite having no experience with such things I was able to adjust a fast-running wristwatch in just a few minutes instead of several rounds of adjusting and waiting. Definitely worth the very modest cost.
  • Great app

    5
    By Jeanlorent
    As a beginner this app allowed me to adjust my Invicta which was too slow. Now it is slightly fast at average +3.5s/d over 8 days which I consider outstanding for a sub $100 automatic. As a reminder Rolex COSC were -3/+5 s/d and they revised it recently to -2/+2. Initially I worried that the iPhone ear bud microphone might not be sensitive enough as when I was placing it on the watch and run “Voice Memos” native iPhone app I could not detect a beat. But Hairspring app appears to increase sensitivity and filter very well for the beat. All I do is to attach the mic with piece of tape to the watch glass while I adjust the regulator with a plastic tooth pick to not risk any magnétisation. Wonderful app and so much fun!!!
  • I achieved +-1.5sec accuracy with this App!

    5
    By Excursioner
    I'm a new owner of a 46mm Hamilton Khaki Pilot that was loosing 12 seconds per day. After checking a YouTube tutorial on calibrating this type of watches I used this App to get realtime measurements of the watch beat while making micro adjustments. Every small turn on the speed screw needed a soft shake and about 5 minutes in the watch to get a stable lecture again. I achieved to get +-1.5 seconds of accuracy in the beat. It's been 24 hours since I synced the watch with the atomic time and there are no lost or gained seconds. Incredible! It is very important to use the mic on your Apple Earbuds, just some 5" or more separated from your iPhone so there's no risk of getting your watch magnetized, which will give you an irregular beat. And while making the ticking lecture avoid voices or any other sound, it will interfere with the results. Also crucial to adjust to the correct frequency in the settings section (in my case was 28800 VPH for my watch). The App was unable to auto detect it correctly, it kept showing 14400 instead of 28800. And a thing I found is that the lectures where different if the watch was facing down or up. So I did the adjustment facing down, then turning it up to make the beat lecture. The only con I found is that sometimes the App wouldn't recognize the mic source. I just force closing the App, waited half a minute and opened it again.

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