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.

Category : Tools

Reviews (29)

A. G. u. Dec 6, 2016

Liked it when it used to work on my galaxy s4 mini, but now light doesn't flash or even turn on with this app.

Ash. W. Mar 30, 2017

The app won't work on j2 as the device wont support flashing lights

A. G. u. May 24, 2017

Does not work on Samsung Grand Prime.

Gre. L. May 22, 2017

Phone does not support flashing?¿ something is wrong with your app as other apps strobe my light just fine

Hen. R. May 12, 2017

It does not work. Galaxy S5. Android 6.0.1.

Atu. S. Jan 31, 2017

It should be ready to use

Dar. S. Sep 16, 2016

Don't bother installing crashes as soon as you press the start button on a S7

Kie. W. Mar 31, 2016

This crashes on Htc m9 regardless of led setting or middle box setting. It crashes as soon as you tell it to start.

Aar. N. May 4, 2016

I love the idea of this app and I would love to give 5 starts but it doesn't work on the s7 the second I click start measurement it force closes

Mat. H. Mar 21, 2016

Loved this app on my HTC One, however, can't use it on my S7. If the app can be updated for this phone, i will gladly change this rating. Thanks!

A. G. u. Sep 8, 2016

It doesn't work at all on this device. I tried every possible combination of settings. Ah well...

Ste. P. Aug 4, 2016

Would have been great if it worked

Dav. M. Aug 25, 2016

Seems to work, time will tell

max. m. May 18, 2016

Usefull when ur a lev inspector

And. S. May 18, 2016

Light wont strobe. Switche between auto focus on/off and toggled all other settings. Motorola's razor max.... help !

Ted. K. Jul 7, 2016

Crashes immediately.

ama. Aug 31, 2016

crashes on s6

Bob. N. Jun 18, 2015

Of 3 similar apps I tried, this is the only one that was usable to find the rpm of a 9 blade cooling fan (1200). Other apps flashed incorrectly. Works best if you stay back from object 2-3 ft. Takes some getting use to because it will sync at 1/2 as well as true rpm. Put white tape on one blade. Find rpm where tape motion freezes. Hit 2x button. If 2 tape spots appear, you were at true rpm, if still single spot, you were at 1/2 of true rpm.

Mon. S. Jun 17, 2015

Great idea. Good gui. Light never came on with nexus 5. No options to mess with, so uninstalled within 2 min of install.

J. D. Jan 22, 2016

Moto x pure Android marshmallow

Rya. G. Jan 11, 2016

Great idea. Works fantastically on casio commando. Totally happy with it. Awesome job!

Jos. C. Aug 12, 2014

Motorola droid, will not strobe.

Chi. J. Jan 30, 2016

Works on my L3. Brill

Mah. H. Nov 26, 2015

suppose I want to measure rpm of a sealing fan, what I have to do?? what will be the Hz (frequency)????

Aar. M. Feb 10, 2013

The idea is nice but it just doesn't work(HTC sensation xe) when trying to create an accurate time interval on an OS. Max is at about 12Hz an even then it's not accurate. Waste of money

A. G. u. Jan 12, 2013

Could you please fix does not work on electrify 2.

A. G. u. Nov 19, 2012

Purchased this as I needed to measure a motor speed on site. Does not seem to work. Motorola defy

Adr. T. Feb 7, 2017

Does not work on a Pixel XL

Gre. P. Sep 12, 2016

Will not run on my Note 4.