Frequency Counter: Hz Meter

Measure sound frequency in Hz — audio tuner, RPM counter & 50/60Hz meter

Frequency Counter is an audio frequency meter, Hz counter, and instrument tuner for Android. Measure the dominant sound frequency in real time with your phone's microphone — no extra hardware needed.Turn your Android phone into a four-in-one frequency lab: read any tone in hertz, tune instruments, count RPM, and verify 50/60 Hz mains hum.▶ MAIN FEATURES• Frequency meter — dominant frequency in Hz, live from the …