SoundRPM: Engine Tachometer

By 春城 贾 on AppTrack Ninja.

Estimate RPM by sound

SoundRPM helps you estimate engine RPM using your iPhone microphone. No wires. No OBD. No extra hardware. Whether you are checking idle speed on a classic car, tuning a motorcycle, or working with a lawn mower, generator, chainsaw, or small engine, SoundRPM gives you a quick RPM estimate based on engine sound. How it works: 1. Choose your engine type 2. Set cylinders and stroke type 3. Select your expected RPM range 4. Hold your iPhone near the engine or exhaust 5. Start listening and view the estimated RPM Key features: • Estimate engine RPM from sound • Built for classic cars, motorcycles, …

Categories: Utilities

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