Strobe light tachometer (RPM meter) for iOS

The Strobe Tachometer RPM Meter is a useful utility app for iPhone that provides three distinct methods for measuring the rotational speed of objects. Users can choose from strobe, laser, and magnetic tachometer functionalities, catering to various applications. The strobe tachometer utilizes flicker frequency to gauge rotation speed, with precise control ranging from Hz to 1000 Hz for external light sources, and up to 100 Hz for the iPhone's flashlight. This flexibility allows for accurate measurements across a wide range of rotational speeds.

Additionally, the app features a laser tachometer capable of measuring speeds from 0.3 Hz (18 RPM) to 1000 Hz (60,000 RPM) with a one-second update time, requiring a 5 mW laser. The magnetic tachometer mode leverages the iPhone's magnetometer to detect magnetic fields from spinning magnets, effective for low to medium rotation speeds starting at 6 RPM and going up to 2700 RPM. This versatility makes the Strobe Tachometer RPM Meter a valuable tool for both hobbyists and professionals.