Guitar ToolKit has 260 chord diagrams covering 1,300+ variations, with the metronome tool. You can dial in an exact Beats Per Minute, Guitar Toolkit has built-in pitch reference tones and scales to help you along. The Scales feature includes a playable fretboard to hear what each note sounds like. Alternate tunings supported for both! And in addition to 6-string guitar, GuitarToolkit also provides full support for Bass (both 4 & 5 string), 12-string guitars and lefties alike.