Spaced Repetition
AceRanker uses the SM-2 algorithm to schedule review sessions at optimal intervals, ensuring long-term retention of concepts you've learned. Every question you get wrong is automatically converted into a review card — and the AI decides exactly when you should see it again.
Video Walkthrough
Overview
Navigate to Spaced Repetition under the AI Learning Hub in the sidebar. The overview page shows your card counts and a list of all topics with due cards.
Each topic card shows:
- Accuracy — your current accuracy on that topic
- Interval — days until the next scheduled review
- Reviews — total number of times you've reviewed this topic
- Status badge — Due (overdue cards), On Track, or Mastered
How It Works
After every quiz (including teacher-assigned quizzes), questions you answered incorrectly are automatically converted into review cards. The SM-2 spaced repetition algorithm schedules when you should review each card:
| Review Rating | What it means | Next Review |
|---|---|---|
| Again | Forgot completely | Same day |
| Hard | Struggled to recall | 1-2 days |
| Good | Recalled with some effort | 3-7 days |
| Easy | Recalled instantly | 10+ days |
Starting a Review Session
Click Start Review on any due topic to begin. The review launches as a quiz-style session in Revision Mode with a timer.
For each card:
- Read the question and try to recall the answer
- Write or select your answer
- Click Next Question to proceed
- After all cards, your accuracy is calculated and the algorithm adjusts future review dates
Dashboard Stats
The top of the page shows three key metrics:
| Metric | Purpose |
|---|---|
| Due Today | Cards that need review today |
| Total Cards | All cards in your spaced repetition deck |
| Review Cards | Cards scheduled across all future dates |
Why It Matters
- Questions you struggle with appear more frequently
- Questions you've mastered gradually space out to weeks or months
- Over time, this builds long-term retention with minimal daily effort
- The algorithm adapts to your individual learning speed per topic
Review your due cards every day — even 10 minutes of spaced repetition is more effective than an hour of cramming before an exam.