1) All controls need to be on one screen. Flipping back and forth to highlight vs make notes hampers usefulness. 2) "save" ought to be automatic; forgetting to save means loss of notes. Or at least make auto-save notes an option. 3) Notes need to be tied directly to highlights. I would like to see the notes I made related to the highlight I made.

4 STARS because it's good but could less cumbersome, less prone to loss of notes, and highlight specific.