Written and reviewed by Mahmoud Ghonemi, founder and CEO of iTutor ·
Spaced repetition shows you a flashcard right before you would forget it, stretching the interval each time you remember it correctly. Forget once? The interval resets. This pattern matches how memory consolidates and dramatically reduces total study time vs blocked review.
More detail
iTutor's Study Plan uses this idea: after you study a unit, it schedules reviews of that unit a few days later and again at longer intervals, so the material comes back just as it starts to fade. Quiz results and flashcards feed a memory kept for each subject, so the topics you keep getting wrong get more attention while the ones you have mastered take less of your time.