What does your ideal revision app look like?

I'm developing an app to help students revise. I want to create a universal application that takes over all of what you need for revising. You just upload your resources, exam dates - and your study plan is made automatically, you study thanks to AI-generated flashcards (not manual tedious PDF to flashcard copying)

So I want to hear from you, what features would you like to see in such an app, what practical features should I keep, and what features should I get rid of?

PS:

Currently the website is www.flash-genius.com (still in development, it's far from perfect), if you have time just take a look at it and tell me what to improve on or give me general feedback