iPhone Screenshots

Description

Kello analyzes the precision of mechanical watches against the iOS system clock using a microphone.


How Kello works:

All mechanically regulated watches are designed to start and stop 1000s of times every hour. A portion of the energy used during this starting and stopping motion is released as acoustic energy, resulting in an audible "tick-tock" sound. The regularity of this sound can be measured against the more precise, internal time-signal of iOS devices, such as the iPhone, and the resulting difference in timekeeping is displayed by Kello.


Supported Watch Frequencies:

Kello can automatically determine the frequency of the watch being measured based on eight of the most common frequencies used in mechanical watches. These frequencies are standard among low-, middle- and high-grade mechanical timepieces and will accommodate the vast majority of mechanical watches produced in the past 100 years. The following frequencies are supported:

* 14,400 bph
* 16,200 bph
* 18,000 bph
* 19,800 bph
* 21,600 bph
* 25,200 bph
* 28,800 bph
* 36,000 bph


Recommended hardware:

Kello works best with an external microphone that has an excellent frequency response between 10,000 and 20,000 Hz.


How to know if your watch is mechanically regulated:

There are four simple ways to determine if your watch is mechanical and can be used with Kello.

1. Look at the text on your timepiece. If the word "quartz" is featured anywhere on the watch, your watch is not mechanical. If the words "automatic" or "shock-proof" are written anywhere on the watch, there is a very high chance that your watch is mechanical and its precision can be measured by Kello.

2. If your watch has a hand that indicates the seconds, observe how frequently it moves. If the hand moves only once every second, it is very likely that your watch is not mechanical. If this hand moves several times per second or appears to sweep along in a smooth, continuous motion, your watch is most likely mechanical and its precision can be measured by Kello.

3. Turn the crown, that is used to set the hands of the watch, while it is pressed fully in. If the crown turns smoothly, your watch is not mechanical. If you can hear a ratcheting sound as you turn the crown, your watch is most likely mechanical and its precision can be measured by Kello.

4. Place the watch close to your ear and listen. If you hear a noise approximately once every second, it is unlikely that your watch is mechanical. If you hear a constant ticking noise, your watch is very likely a mechanical watch and its precision can be measured by Kello.

What's New

Version 2.48

Updated for iPhone X

Customer Reviews

Save your money

313516600

Tried this with iPhone 4 and 3 different mikes. It does not work. Won't even pick up a 3135 movement which is loud as hell, never mind any other high end movements.

Thanks

zwtg

This is no replacement for a professional timing machine, but it costs thousands less than a professional unit and it fits in my pocket. Picked up my Rolex with consistent results. It took some patience to find the best place to position the microphone (just above 6:00 on my Rolex), but after that it worked very well. A nice piece of tech and another great reason to love my iPhone.

Awesome

shawnmachompers

Other touch screen versions of this tool cost almost 1000 times as much. Kello does exactly what it says it does, costs $1000s less, and is just as precise. Getting the mic positioned correctly takes a bit of getting used to, but once you get the hang of it the app works flawlessly. I won't knock the software for the initial difficulty with the hardware. Fantastic work!

Information

Seller
Coldflower Design Corp.
Size
1.5 MB
Category
Utilities
Compatibility
Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.
Languages
English
Age Rating
Rated 4+
Copyright
© Coldflower Design Corp.
Price
$13.99

Supports

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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