It's based in questions and answers. Anki shows a question and waits for your response. When you're ready, Anki will show you the correct response and compare it to your own answer, then, based on the results, propose a plan of study for that specific question.
This plan is the key. It will help guide your study and review of different subjects according to your correct and incorrect answers. This is based in the Anki method, which claims to guarantee convincing results.
If you want to try out a new way to study, by necessity or curiosity, Anki offers up an interesting alternative that has already been used and approved by a large number of students.