Strobo RPM Hz Light Free - Free, Faster, Lighter, Cheaper.
Can works with RPM and Hz.
Range: 0.1 Hz to 80 Hz. ( the maximum depends on the mobile, processor, memory, cam light, etc.)
This app can't substitute precision devices or machines.
The precision of this app depends on a lot of things like processor, memory, active apps, mobile, flashlight hardware, etc.