Spot on! They really have zero affordances. At any given time I can be on any given screen, and it's entirely unclear how to progress or move backwards. Even a

Spot on! They really have zero affordances. At any given time I can be on any given screen, and it's entirely unclear how to progress or move backwards. Even after using it, I still have to re-learn it every time i use it. There's no intuitivity (totally a word) at all.