Love love the app but it would be much better if you explained how each of the options work. When I tap help I just get the option to suggest a new feature but can't find any text on how the app is supposed to work. For example cram mode...have no idea how that works or why you would use it. Finally discovered on my own that I could limit reading questions to subsections by using the custom feature at the bottom of the list. I do like how I can read questions by subsection and then immediately take a quiz on those questions. Also love the ability to take practice exams and have them tracked. Play app. Been using it on a Note 8.