Version history
Video tachometer
44
ASO score
Text
38/100
Reviews
50/100
Graphic
60/100
Other
0/100
App Rating
4.7
Votes
187
App Age
8y 9m
Last Update
Nov 11, 2025
iAP
$3.99 - 3.99
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
4.72
|
4.46
|
+6%
|
|
Number of Ratings (Voted)
|
187
|
471.7K
|
-100%
|
|
App Age
|
8y 9m
|
6y 1m
|
+43%
|
|
In-app Purchases Price
|
$3
|
$37
|
-92
%
|
|
Update Frequency
|
25d
|
44d
|
-44%
|
|
Title Length
|
16
|
25
|
-36%
|
|
Subtitle Length
|
30
|
27
|
+11%
|
|
Description Length
|
3 824
|
2 590
|
+48%
|
|
Number of Screenshots
|
945
|
987
|
-4
%
|
|
Size
|
5MB
|
166MB
|
-97
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
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No results were found!
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
|
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| Top | Dec 06, 2025 | Dec 13, 2025 |
|---|---|---|
|
No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|---|
|
обороты
|
out
out
|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
16
of 30
)
Video tachometer
Subtitle
(
Characters:
30
of 30
)
Strobe light effect, RPM meter
Description
(
Characters:
3824
of 4000
)
When the frame rate of a video matches the speed of a particular part, the effect is the same as using a strobe light. In the video, that part freezes.
Since the frame rate of a video can be adjusted, this effect can be used to determine the rotational speed of a part.
The smartphone must support slow-motion video recording (filming at a high frame rate). This is the case for all smartphones starting with iPhone 5S. The range is as follows:
• 0.5—240 Hz (30—14400 RPM), for all phones from iPhone 6 onward
• 0.5—120 Hz (30—7200 RPM), for iPhone 5S
THE HERTZ (Hz) VALUE IS MORE ACCURATE THAN THE REVOLUTIONS PER MINUTE (RPM) VALUE, SINCE REVOLUTIONS PER MINUTE ARE CALCULATED FROM HERTZ AND ROUNDING IS DONE.
To get a clear image, good lighting is important. The clarity of the image is controlled by the exposure of the video (exposure time and light sensitivity (ISO)). If the exposure time is reduced, the image will increase in clarity, but brightness will lower. To increase the brightness, you need to raise the camera's light sensitivity (ISO), but then the amount of noise increases. You also need to manually adjust the focus of the camera.
The app can record video. The video format depends on the selected format in the app settings. If your iPhone supports 4K video format (3840x2160), then you can record 4K video at the frame rate supported by your iPhone. Text with important information is added to the frames of the recorded video: the selected frame rate, exposure duration, ISO, time stamp, time difference between the current and previous frames (Tcurr. − Tprev.), the sequence number of the frame in the recorded video. If you want any other information to be added, then let me know.
You can choose to add only part of this information, and you can choose a different text color. You also have the option of not adding any information. You can change the information that is added and the color of the text while recording a video. At high frame rates, frames that do not have time to be processed may be discarded. This does not affect subsequent frames and can be controlled using the time difference between the current frame and the previous frame (Tcurr. − Tprev.). Dropping frames affects the video frame rate displayed in the "Photos" app. But the time interval between frames that were taken one after another and were not discarded will correspond to the selected frame rate. Frames may be dropped even when shooting slow motion video using the "Camera" app. You can check this by looking at the frame rate for slow motion video in the "Photos" app.
Video containing the app's interface can be captured using the iOS "Screen Recording" function.
To take a photo with the result of the measurement written on it, press the "Pause" button and take a screenshot.
It is possible to choose a video format that has the best quality, but has a significantly lower maximum frame rate. The difference between the formats is clearly visible only when using the digital zoom. Also, when using a format with better quality, the Rolling Shutter effect is stronger. Therefore, the best quality format can be used at speeds less than about 1000 rpm.
You can turn on hints for easier observation of changes in rotation speed. Hints show how to change the frame rate (decrease or increase) depending on the direction of rotation of the mark. The hints are selected manually, but then you do not need to remember this information. The hints are relevant for frequencies close to the rotation frequency. If the direction of rotation of the impeller is known, hints can be selected in advance. The arrow showing the direction of rotation of the impeller must correspond to the "+" button.
The video tachometer measures the rotational speed in exactly the same way a stroboscopic tachometer would.
}
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Other
Additional Information
Version history
2.1.4
Nov 11, 2025
• Bug fixes.
2.1.3
Nov 02, 2025
• Minor changes in text design.
