iTutti is a simple 3 in 1 utility for professional musicians, or those aspiring.
It includes a toner to generate pure tones at selected frequencies. Tones generated are easily selectable by semi-tone or octave or even a specific frequency in Hertz if desired.
Also included is a simple metronome guided by sight or sound (or both) with easily selectable tempo and accents.
Also included is a simple tuner allowing quick and accurate instrument tuning using the built-in iPhone microphone or plug-in mic on the 2nd or 3rd generation iPod Touch.
iPod users should note that the plug-in mic is a REQUIREMENT here as the iPod Touch does not include a built-in mic like the iPhone or iPad.