I can get the APP for free (App of the Day) and am completely satisfied:
1. runs smoothly and quickly
2. Very simple, easy to understand, no advertising
3. Three very nice tools (metronome, tuner and Chordanzeige). Especially the latter is extremely cool, in my opinion, because you can watch and listen to chords in variants of which one knew that they exist, but not as they sound and play.
The normal price is really awesome. 6 euros would be acceptable if the APP would also display the GuitarPro Tabs and play.
I remain with 'a gift horse, you look nothing in the mouth' and would advise you to just wait until the whole is offered again free.
