Lots of potential but...

This app could be amazing. It’s so close. However, there are a few big flaws that just can’t be overlooked.
The elephant in the room is iCloud sync. I don’t know whose fault it is, the developers or Apple, but the app crashes every time it tries to sync (both Mac and IOS versions). I’ve tried reseting iCloud sync multiple times, making sure to follow their instructions exactly, to no effect.
The next big problem I have with Mental Case is how multiple choice questions/notes are handled during slideshow mode. I make a mixture of traditional flashcard-like notes (e.g. "compare and contrast X and Y” on one card/facet with the answer on the other), and multiple-choice-type notes ("which of the following is most likely to cause X...” on one facet, and then an option-A facet, option-B facet etc etc). If you do a traditional quiz or “presentation" as the app calls it, the question-answer cards work pretty well, showing the prompt and then the answer. However, when a multiple choice card comes up, It shows the prompt, "which of the following is most likely to cause X...”, but not any of the choices. If you advance, it then only shows you the right answer, which kind of defeats the purpose of a multiple choice question. You can set it to multiple choice mode, but then all of the question-answer cards are left out. Can’t I just have one quiz mode that displays both question-answer and multiple-choice cards correctly at the same time?
This app is so close. If they could fix the iCloud issue, and make a few small tweak but very important UI tweaks, it would be 5 stars for sure. It’s just not there yet.

Stuart Feichtinger about Mental Case — Flashcards for the Serious Student