Strobe light ~ tachometer to measure RPM and vibrations at App Store analyse

App power index: 140 (based on ranks around App Stores today)
Utilities Productivity
Developer: Grappetite
Price: 0 free
Current version: 1.4, last update: 7 years ago
First release : 09 Oct 2013
App size: 4.75 Mb
4.2 ( 4832 ratings )
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Estimation application downloads and cost

> 3.08k
Monthly downloads
~ $ 1.26k
Estimation App Cost


A smartphone strobe tachometer / timing light.

Suppose you have a rotating or oscillating piece of equipment (eg. a spinning shaft, vibrating rod), and you want to know how fast it is moving, this app can help you. If the strobe light that flashes at the same speed as the vibration or rotation, the item will appear to ‘freeze’ under the strobe light. You know the frequency of the flashing light, so you can tell the frequency of the vibration or the speed of the shaft.

To Use
Dim the ambient lights until the strobe is the dominant light source. Shine the light at the item spinning / vibrating and adjust the frequency until the item appears to be still. The frequency of the light is the same as that of the object and you can read off the frequency (HZ) or speed (RPM). Start high and work your way down.

Caution
If your light frequency is 1/2 or 1/3 or 1/4 x or any exact proportion of the shaft speed, the shaft will also appear stationary. This is called a harmonic. To ensure you don’t have a harmonic, double the frequency and check again. The highest frequency with effectively stops the motion of the shaft is the true frequency.

Health Caution
Flashing lights occasionally cause epilepsy or other troubles in some people. If you feel unwell using this app then stop. This app is a tool, not a toy, please be careful.
Here is a good video about how to use this tool: http://www.youtube.com/watch?v=MqLwgisyjjw
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# Term Store county Place Priority
1 strobe light tachometer 2
2 strobe lights 5 ⭐️⭐️⭐️⭐️
3 strobe light free 5 ⭐️⭐️⭐️⭐️
4 strobe light app 8 ⭐️⭐️⭐️⭐️
5 strobe light! 12
6 strobe light USA 12 ⭐️⭐️⭐️⭐️⭐️
Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
Poland free
UK free
India free
Japan free
Korea, Republic Of free
Poland free
Russia free
Turkey free
USA free
Korea, Republic Of free
Ukraine free
Available for devices
iPhone3GS, iPhone4, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,