Super happy that I've now added spaced repetition and revision notes to Mathematico!
Spaced repetition: when users complete an exercise, it gets added to their flashcards. Users can click 'start exercising' and the app will generate random problems for them to try. Problems they find easier are less likely to appear. Great for when students know they want to revise but don't know where to start. Great also for teachers who need a quick starter at the beginning of a lesson!
Revision notes: when a student finishes a lesson, a summary gets 'unlocked' in their revision notes, giving a dusting of gamification and a useful way for students to review they key points of a topic.
Here's to hoping these features add value to my users' experiences and keep them using the app. If you use these features, I'd love to hear any feedback you have. Peace and love!