推荐理由：《Kello》是一款适用于苹果系统的生活类软件APP。Kello analyzes the precision of mechanical watches against the iOS system clock using a microphone.《Kello》大小1.2 MB，在本站深受5930位玩家喜爱和下载。要找等，赶紧下载到手机吧。
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:
Due to the CPU intensive nature of analyzing real time audio, the iPhone ⑤ or higher is recommended for devices running iOS ⑦. If you are running iOS ⑥ or earlier, you will be prompted to download a legacy version of Kello, optimized for use with the iPhone ④, ④S, and ⑤.
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.
