iChanges - Jazz Chord Trainer

iChanges - Jazz Chord Trainer is for players who want to work on jazz harmony in a practice room instead of in a lesson. By our assessment, its value is in the narrow job it does: drilling chord shapes, progressions, and ear-and-finger coordination without the clutter of a full music app. The trade-off is obvious too, because a trainer like this is useful only if someone already has the patience to repeat the same material and listen closely. In practice it is the kind of app that rewards short, focused sessions and punishes casual tapping. Compared with a full piano app or general theory course, it sits much closer to a specialist drill than to broad instruction, and that makes it feel honest about its limits. The name says the scope plainly, and the catalogue places it in Music, which is exactly where this sort of tool belongs. It works best as a quiet practice aid, not as a complete jazz education.