United StatesNOTE: The App is just for iPhone with flashlight. It doe NOT work on iPad, iPod touch or any iOS device without flashlight. Description: Using this App, you can control the flashing on/off speed of your phone flashlight between 1Hz to 130Hz. In another word, this App makes your iPhone into a strobe light. What's the Application then?! You can use this App to use your iPhone as a tachometer that measures the speed of any rotating object. How to use it? Suppose you have a fan and need to measure its speed (RPM). Turn on the fan in a DARK environment, launch the App on your iPhone (that has flashlight). Manually tune the speed using the main slider of the App to see the rotating object looks almost not moving. Then, start fine tuning using the three buttons in the App to get the exact speed. At this point the rotating object looks like stationary! But, it is moving! So, never touch the moving/rotating object during your test! Features: - Slider to adjust strobe light speed between 1-130Hz (60-7800RPM) - x2 and ÷2 buttons for quick adjustment of flashing speed - 3 Buttons for fine tuning of the speed up to 2 decimal: 0X.00, 00.X0, 00.0X - Textfield to manually enter the speed in RPM (tap on the speed label) - Button for light and dark background option - showing the speed in both Hz and RPM - simple and easy to use!!
Works, but dimly
Does the job, but doesn’t set the flash to full brightness.
United StatesTechnical Service Manager-HVAC OEM
This app works very well and is very accurate! Very easy and quick to use, even one handed!
United States.
Unbelieavble saved my project -Sincerely LeBron James
United StatesPerfect Strobe for Zoetropes
Outstanding app. Very accurate strobe for timing the frame rates for zoetropes. The flashes are clean also, which gives crisp animations. I actually like how the flash is not overly bright — this shields my zoetrope animations from over exposure. I am stunned that this superb app is free. I will check the author’s web page to see if there is a option to submit a donation.
United StatesGreat app! Used every day!
Each Hertz is equal to 60 cycles per minute! 10 Hz equals 600 cycles per minute!! I love using this strobe light as it has the exact Hertz setting!
United StatesConsistently accurate flashes? No
Needs a fix to make the strobe flash at even rates.
United StatesNot ISO or NIST compliant; way off
We just had our centrifuge calibrated by an ISO 17025 accredited lab. It was recorded at 2515 RPM and this app reads 2664. That’s out of specification for us.
United States
- Added quick RPM adjustment of x2 and ÷2 - Changed manual input to RPM
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