Not for iPad (Read my review instead of star rating)
I have used this on my iPhone 4 for several years and it is great. Recently bought an iPad with retinal display and put the app on it. Can not believe the difference. It still works perfectly on my iPhone. On the iPad, most features work except the reverse chord look up is so slow that it seems the iPad is locked up. I give it 5 stars for the iPhone and 0 stars for the iPad. Hope they fix it soon.
WmPeyton about
Guitarist's Reference, v5.4