Engine RPM for iOS

Engine RPM is a versatile application designed to measure the revolutions per minute (RPM) of various internal combustion engines by analyzing the sound they produce. Utilizing advanced signal processing algorithms, the app extracts engine sound frequencies to provide accurate RPM calculations. Users can set parameters like the number of cylinders and engine type, which include both 2-stroke and 4-stroke engines, to enhance measurement accuracy. The app is suitable for a wide range of engines, making it a valuable tool for diagnostics and setup in various applications, from motorcycles to aircraft engines.

One notable feature is the real-time autocorrelation graph, which assists users in fine-tuning the expected RPM range for better analysis. However, it is crucial to operate the app in environments with minimal background noise, as excessive sound interference may affect measurement accuracy. Although Engine RPM delivers reliable readings, it is not intended to replace traditional tachometers, especially for rapidly accelerating engines. The app also allows for customization through various settings, including update periods and filtering options.