stroboscope tachometer

This app makes the LED-Flashlight of your smartphone-cam blink with a certain frequency. You can enter the frequency by typing the value in Hertz (blinks per second) or by blinks per minute and you can also tune it with a slider and finetune it with buttons. Further you have the possibility to double the frequency by clicking on the button "2x" to make sure you have the right frequency. Please note, that the maximum frequency is being reduced by other apps, that are running in the background. Other apps, that are running in the background could even cause an irregular frequency. The application can be used in 16 different languages. To choose a language, click on menu button and scroll down or up to choose your favorite language. To end the app, click on quit or on the back button, but never use the home button while blinking or else the flash light will keep on blinking as long as the app is running in the background. Please be advised, that this app could cause epileptic seizures. If you feel uncomfortable with it, turn it off. I hope the app fullfills your expactations.

* permission.WRITE_INTERNAL_STORAGE is used for some Samsung-devices, because their LED is managed by writing data on the internal storage.