I've been using Guitar Pro, or its file format for many years and it has always bothered me a bit, I have to, always sat down at the computer to learn new songs or to play. Thanks to this app, I can power on the move do, and things are even played. However, a tablet would be a bit better than a smartphone. Ud of functions is of course limited, but I do edit he prefers on the PC. Well, I think the song management. Overall, a successful app, and at a special price definitely worth the money.