Strobe tachometer (RPM meter)

🇺🇸 United States
Dmitriy Kharutskiy  | 
54
ASO score
Text
59/100
Reviews
50/100
Graphic
60/100
Other
0/100
rating
App Rating
4.3
rating
Votes
317
rating
App Age
11y 9m
rating
Last Update
Oct 31, 2025
rating
iAP
$3.99 - 3.99

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Rating
4.34
4.46
-3%
Number of Ratings (Voted)
312
471.7K
-100%
App Age
11y 9m
6y 1m
+92%
In-app Purchases Price
$3
$37
-92 %
Update Frequency
43d
44d
-3%
Title Length
29
25
+16%
Subtitle Length
29
27
+7%
Description Length
1 902
2 590
-27%
Number of Screenshots
1110
987
+12 %
Size
16MB
166MB
-91 %

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Ranking Keywords in United States

Keywords App Rank
обороты
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страбоскопы
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стробоскопы фонарик
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Illustration
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Text ASO

Title (
Characters: 29 of 30
)
Strobe tachometer (RPM meter)
Subtitle (
Characters: 29 of 30
)
+ Laser Tachometer + Magnetic
Description (
Characters: 1902 of 4000
)
STROBE TACHOMETER When the flicker frequency of light coincides with the speed of any object, such as a fan, the rotating fan may appear to be stationary. Changing the frequency of the flicker of light may help detect the rotation speed. You may easily use the flicker frequency control buttons to quickly assign the flicker frequency with an accuracy of 0.0001 Hz (0.01 RPM): • Up to 1000 Hz (60 000 RPM) for a connected flashlight (see the video on YouTube: https://youtu.be/iq6Xiums05o). • Up to 100 Hz (6000 RPM) for the iPhone flashlight. IF THE SPEED IS MORE THAN UPPER LIMIT, YOU MAY STILL DETERMINE THE SPEED BY FIRST MAKING MEASUREMENTS WITH A LOWER FLICKER FREQUENCY AND THEN MAKING A SIMPLE CALCULATION (AS EXPLAINED IN THE APPENDIX). To change the frequency, you should simply press and hold the button. In the app settings, you can adjust the speed at which the flash rate changes when you press and hold the button. The flicker frequency can be displayed either in Hz or RPM. The image you see will be sharper in lower external light. After a long period of usage, in case of overheating, the iPhone flashlight turns off automatically. LASER TACHOMETER • Measurement range from 0.3 Hz (18 RPM) to 1000 Hz (60 000 RPM). • Step 0.01-0.0001 Hz (1-0.01 RPM). • Update time 1 sec. • 5 mW laser power required. MAGNETIC TACHOMETER This tachometer operates by measuring the magnetic field from a spinning magnet. The magnetic field is measured by the iPhone's magnetometer. The magnetic tachometer is best suited for measuring low rotation speeds (from 6 revolutions per minute). It can also be used for measuring medium rotation speeds (up to 2,700 RPM), but at such speeds there is a risk of spontaneous tearing away of the magnet and strong vibration due to center-of-gravity shift. • Measurement range from 0.1 Hz (6 RPM) to 45 Hz (2,700 RPM). • Step 0.2-2 %. • Update time 2-5 sec.}
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Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon…
Rating
4.3
317 voters

Some Latest Reviews

mr1r0
20 Sep, 2025
5
テープスピードを4.76cm/sに合わせた時、モーターの回転数が何回転になるかを調べる方法を試行錯誤した結果ストロボスコープが有れば良いとの結論に達しiPhoneのアプリを検索して辿り着きました。 キャプスタンとプーリーの直径から割り出した値と照らし合わせ実効径が導き出されました。 モーター制御回路のシミュレーションに導入することが最終目的。
Maj Stinkfist
19 Sep, 2025
5
Although the UI looks a little outdated, the app works very well. Use it for different purposes, among looking at zoetrope vinyl records. In this case 24.50 Hz is the frequency where the record stops spinning completely 😉
Jorge.Ruiz
30 May, 2025
5
La utilizo para regular velocidad en platos de vinilo vintage. 100% recomendable.
ChristianHa...
28 Apr, 2025
5
Found the rpm of a fan. Had to play wound a bit to work out how it works but it does work the way the video tutorial says.
Metacus
05 Mar, 2025
5
I bought a cheap stroboscopic disc to use with my record turntable not realising that I need a strobe light. The disc works at 50 Hz so I set this little light for 50 Hz and it works perfectly without upgrading to the paid version. Impressive!
MichaelGorm
09 Feb, 2025
5
With my iPhone flash, I can calibrate my record players to perfection - just using the phone, a strobe plate and this app. Great work!
Coppertone_baby
27 Dec, 2024
3
I use the iphone flashlight but there is an inconsistent RPM where the flicker will stop for every second and then flash a steady light
lenochka2602
10 Aug, 2024
5
В примитивной бесплатной версии работает , что хотел узнать ,узнал,спасибо.
LucasC3
04 Jul, 2024
5
Para medir las rpm de amplificador Leslie de mi órgano Hammond ha funcionado a la perfección.

Other

Additional Information
Rating:
4.32
Voted: 317
App Store Link:
Website: -
Email: -
Privacy Policy:
Categories: Utilities, Entertainment
Size: 15MB
iAP: 3.99 - 3.99 $
App Age: 11 years 9 months
Release Date: Mar 13, 2014
Last Update: Oct 31, 2025
Version: 3.6.5
Version history
3.6.5
Oct 31, 2025
• Minor changes in text design.
3.6.4
Apr 28, 2025
• Small improvements.
Version history