Cello
PitchPerfect Musical Instrument Tuner v.1 1
PitchPerfect Musical Instrument allows you to fine-tune a variety of instruments. The application has an advanced recording engine that allows it to perfectly identify the frequency of sounds played to it.
Audio Tuner v.1 7
Audio Tuner is a free chromatic instrument tuner. Play your instrument into your computer's microphone and Audio Tuner will tell you the frequency being played.