EzyTuner - Version 1.2 EzyTuner is a fast, accurate instrument / guitar tuner and metronome. Using your microphone it automatically detects the frequency of the instrument and calculates the note, so there is no need to tune by ear. Use it as a guitar tuner, bass tuner or even your singing voice. Why pay $100s for a guitar tuner when you can get one this cheap with a free metronome.