It’s not very expensive, as of writing it’s free, but is pretty limited. The screen doesn’t rotate to landscape, so it is stuck in portrait mode; not important if you only work in portrait mode maybe, but I don’t. The ‘many’ moods turns out to be ten. Ten standard chord progressions. Progressions don’t play automatically in any way I can see. Progressions don’t reorder to any sequence but a number appears in the corner which gives the order of the chords to play. The graphics show a keyboard chord with chord tonic note highlighted. But I’d say you need some knowledge of chords and keyboards for it to be of any use. Appears to be standalone only, no mention of AUV3 or IAA; so no integration with any other music apps. By tapping the BPM button you can get a rudimentary metronome, but there is no mention of this in the app or App Store description. Overall, it’s not a bad app. It just doesn’t do very much and is quite limited without much documentation.