DoYouNotes - Study PDFs faster for PC

DoYouNotes makes you learn your material faster and take your exams with confidence! It is so effective because it makes you apply active recall and spaced repetition - two of the best study techniques - directly to your PDF notes or books.

How does it work?
Add your notes as PDF, and add questions for everything you need to remember. When you have enough questions, you can start practicing: DoYouNotes will ask you questions one by one, while hiding the answer (active recall). Try to recall the answer without looking. When your are done, you can uncover the answer and double-check. If you know a question well you can put it off to the next day. If you remember it again the next day, you can put if off for three days, then a week, and so on (spaced repetition).
This way you will focus your effort on the sections that need it the most, you save time and ace your exams!