Strobily - strobe light

thepenguin77

About this app

Strobily is the most accurate strobe light app on Android.

Features include:
- Millisecond precision LED flashing
- Flashing to the beat of music
- Pattern flashing
- Audio tachometer mode
- Torch/flashlight mode
- Burst mode
- Adjustable duty cycle
- Flashing with screen off

The newest feature in this app is its ability to flash to the beat of music. This is great for parties because strobe lights make music more fun!

The primary feature of this app though is its extremely accurate stroboscope ability. Uses include everything from checking the RPM of your car engine, to calibrating a record turntable, and even to finding the speed of a spinning fan. With millisecond accuracy and adjustable duty cycle, spinning objects can be made to appear stationary.

The LED will continue to flash even if you quit the app, this makes it perfect for use when you need to be visible at night. Mount your phone on your bike or carry it with you walking so that cars will be able to see you clearly.

The new audio tachometer feature allows your phone to listen to a repeating sound and discover the fundamental frequency plus any harmonics. Then with a simple button press, you can flash the LED at that frequency and watch everything freeze.

Finally, the new pattern section allows you to flash your LED in any pattern you desire. With saving and importing, highly complex patterns can be programmed.


Give it a try! There's something for everyone. Whether you're a technical person or a partygoer, this is the strobe light app you want.

A quick note about different phone hardware: This app works flawlessly on some phones and pitifully on others. Before you say "this app is crap" send me an email and I'll see if I can get it working on your phone.

Ratings and reviews

Best strobe app. Completely FREE!! Really free. No credit card no in app purchases no adds to be removed. This is the real deal free strobe. Very rare for an app to be truly honestly free. No catches no buts no bull. I take pride in my reviews for being true and accurate. Try this strobe app you won't be disappointed. It has way more settings then you will ever need. This isn't some bare bones free strobe app. This baby is loaded with options and settings. ENJOY!!!

Nice app, does exactly what I needed it for. The only issue I found was when I got my new phone, a Samsung 21a, I'm not sure why, but it can't use the 'top serrimg' from the test screen /'best'/. I'm not sure it uses the full brightness of my torchlight, but I guess that could be for security,technical reason. It may be set so it'd spare my phone's hardware and not overload it. On my old phone I'd left the app running and watch it drain my battery a percent/min. Even faster, some times

Used on a Samsung A10. Tried to measure actual speed of an 1800 RPM motor, the on time of the LED was too long to 'freeze' the shaft marks. But worked great on a 200 RPM fan where it was critical for it to work. Surpassed expectations! Update: Got a new Samsung A25. Stobily works the same as did on the A10. It's slow going but was able to balance low speed fans with it.

What’s new

Little bug fixes everywhere