Version history
Kello
41
ASO score
Text
53/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
3
Votes
54
App Age
15y 5m
Last Update
Mar 23, 2021
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
2.97
|
4.46
|
-33%
|
|
Number of Ratings (Voted)
|
54
|
471.7K
|
-100%
|
|
App Age
|
15y 5m
|
6y 1m
|
+151%
|
|
Price
|
$10
|
$0
|
|
|
In-app Purchases Price
|
$0
|
$37
|
|
|
Update Frequency
|
1728d
|
45d
|
+3 771%
|
|
Title Length
|
5
|
25
|
-80%
|
|
Subtitle Length
|
25
|
27
|
-7%
|
|
Description Length
|
2 597
|
2 590
|
+0%
|
|
Number of Screenshots
|
429
|
987
|
-57
%
|
|
Size
|
1MB
|
166MB
|
-99
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 07, 2025 | Dec 14, 2025 |
|---|---|---|
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No results were found!
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| Top | Dec 07, 2025 | Dec 14, 2025 |
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No results were found!
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| Top | Dec 07, 2025 | Dec 14, 2025 |
|---|---|---|
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No results were found!
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| Top | Dec 07, 2025 | Dec 14, 2025 |
|---|---|---|
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No results were found!
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Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
5
of 30
)
Kello
Subtitle
(
Characters:
25
of 30
)
Mechanical Watch Analyzer
Description
(
Characters:
2597
of 4000
)
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.}
Read more
Other
Additional Information
Version history
1.0.3
Mar 23, 2021
* Updates: Privacy Policy
2.49
Sep 16, 2020
This update addresses a critical bug when running Kello on iOS 14