Timegrapher app vs actual timegrapher
Messing around with the timegrapher app on my phone. Has anyone compared the phone app to an actual timegrapher for accuracy? I’m sure the app is not as good, just wondering how far apart they are.
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Elijah
Watch enthusiast with champagne taste on a beer budget.
Northern California
Member since
Last active: 5 hrs ago
7.20” / 18.29 cm
I have two watches that I have run on both and they have actually ended up with the exact same numbers. Obviously the good thing with a "proper" timegrapher is that you can measure the amplitude in regards to the state of your movement in regards to a possible service required
Just downloaded this app! I've been wanting something like this. I don't have a timegrapher yet, but I'll have to see how well this works. Thanks for sharing!
Name of app?
Name of app?
Timegrapher
consumer timegrapghers are all powered by a quartz oscillator, and have the same vulnerabilities that can cause drift - namely temperature. Some hardware would have temperature compensation integrated in the circuitry, and even those have a couple ppm variance (~5s/month)
Chip scale atomic clock (csac) hardware used by terrestrial telecommunications (cell phone base stations) and big data centers are much more accurate, but the microchip itself can costs thousands - but even these could have a variance of a few ms. Higher quality cjipsets are used for things like gps even, but the cost goes up substantially.
A timegrapher app is probably just as good (or flawed depending on you point of view) as a physical timegrapher, the main difference being microphone sensitivity.
I tried the app you showed the screenshot from, but my results were all over the place. It even got the BPH of my watch wrong. I had much more reliable results with the app "Watch Accuracy Meter".
But I don't have a timegrapher to compare it to.
Timegrapher
lol easy enough
I’ll download this and compare to my Witschi Chronomaster pro.
I’ll download this and compare to my Witschi Chronomaster pro.
Awesome, looking forward to feedback!
I also do not have a real timegrapher, and use the Android app Watch Accuracy Meter on a Pixel 7. Testing on a Seiko 6R35 the measured values for various positions are pretty accurate from real world tests. The knowledge it has given me has actually allowed me to hit +2 spd, without regulation, just by storing my phone at night dial up at 20 degrees, sloping down towards the 6. The app also allows input for the lift angle of the movement after finding it from Caliber Corner, and this allows the app to measure the amplitude. However, I cannot attest to the validity of this measurement.