Krane really hit the nail on the head. I bought it too for iPad, it is definitely good for learning basics and how to read their platform. I wish it taught popular chord progressions in minor though, I only recall learning major progressions
If you want to learn popular chord progressions in minor they are relatively the same. All you need to do is lower the 3rd interval on every Major key. The second chord in the minor scale becomes a diminished and the 6th and 7th chords become flat Majors.
e.g. C Major scale in chords is C Major (C E G), D minor (D F A), E minor (E G B), F Major (F A C), G Major (G B D), A minor (A C E), B diminished (B D F),
C minor scale - C minor (C Eb G), D diminished ( D F Ab), Eb Major(Eb G Bb), F minor (F Ab C), G minor (G Bb D), Ab Major (Ab C Eb), Bb Major (Bb D F)
So a 1 - 4 - 5 progression in C major & C minor would both be C F G but the only difference is you lower the 3rd interval of each chord when playing in a minor key.
This would then change harmonies and melodies ect...
Hope that helped somewhat dude. And if you already knew all this stuff then...
Peace
