Here’s a good solid app for your iPhone or iPod Touch from Gibson, the makers of the renowned Les Paul electric guitar.
It has a built in tuner that tells you if you’re sharp or flat if you have the iPhone or iPod Touch G3 with a microphone in the headset. Or it can also play you the notes for the earlier iPod Touch versions with no microphone facility. There’s also a metronome and chord charts so you can jam in time, in tune and with the right chords any place that catches your eye.
Click HERE to check it out, or search in the App Store for Gibson Learn.