Best guitar tool in the app store

This is a really great, full featured app, and IMHO, its the best guitar app in the app store. I just did the in app purchase of GTK+ and was under the impression that I could add any custom string instrument... well I tried to add an 8 string guitar and I see its not available, so maybe they should modify the wording in the in app advertising for GTK+... either that or add 8 string support *hint hint, nudge nudge* Other then my desire (and raised expectations) for 8 string guitar support, this is a really well built app that gets more use then any of my other IOS apps. This really is a must have app for any guitarist.

KeyboardKungfu about GuitarToolkit - tuner, metronome, chords & scales, v2.0