Strobe Light Tachometer

I used this to speed check a turntable. Basically a decent and helpful app and when it produced a steady blinking flash it appeared to be accurate. However, every 2 or 3 seconds the light would go off completely for a second or two then get back up to speed and then the whole process would repeat ad infinitum. Setting the flash rate was easy, however it would be helpful to set by Hz as well as RPM. (iPhone was 6s)

I really like this app. Used it for an educational experience with my son when he saw a video of a helicopter flying with the blades not moving (synced to camera's frame rate). Showed him how the synced strobe only illuminates the blades on our ceiling fan in one position in the same way the synced frame rate only captured the helicopter blades in one position. I then used the app at work to diagnose a bad computer fan that was only spinning at a 1/5th of its rated speed, causing the computer to overheat.

I used this app to verify the Rams of my record player. I tried to use it to stop the 90 markings on the edge of the turn table, but at that high frequency the flashes were not short enough.. Using just a single marking on the turn table, using a 100 rpm setting (3 x 33 1/3 rpm) showed that the speed was accurate. The minimum flash rate is 60 rpm, that is why I used the higher rate. I also measured the speed of my ceiling fan at 88 rpm. I like the app very much.

Had a ceiling fan that was out of balance and used this app on my iPhone 8 to figure out where to add weights to fix it. Trial and error to figure out how much weight to add but the correct placement would not have been possible for me without the StrobeLight app. Thumbs UP! My ceiling fan now spins with barely a wiggle!

We tested this app in class and compared it to our calibrated stroboscope and came up with similar readings. The app works well in darker conditions, but in full daylight it's a little hard to see what's going on. If you have nothing else to use this app should come in handy.