Learning Science

Spaced Repetition
Optimize Your Study Schedule

Learn how to defeat the forgetting curve and create lasting memories by studying smarter, not harder.

Create Spaced Practice Quizzes

The challenge

The Forgetting Curve Problem

In 1885, German psychologist Hermann Ebbinghaus discovered something alarming: we forget about 70% of new information within 24 hours of learning it. This is known as the forgetting curve.

Without intervention, most of what you study disappears from memory almost immediately. This is why cramming the night before an exam rarely leads to long-term retention.

The Forgetting Curve (Without Review)

Day 0

100%

Day 1

30%

Day 7

20%

Day 30

10%

The solution

How Spaced Repetition Works

Strategic Review Timing

Review material right before you would forget it. Each successful review extends the time until the next review is needed.

Increasing Intervals

Start with short intervals (1 day), then gradually increase to 3 days, 7 days, 2 weeks, 1 month, and beyond.

Memory Consolidation

Each review strengthens the memory trace in your brain, moving information from short-term to long-term storage.

Maximum Efficiency

Study less total time while remembering more. You only review when necessary, not wastefully.

The schedule

Recommended Review Intervals

Review
Interval
When
1st Review
1 day
Tomorrow
2nd Review
3 days
After 3 days
3rd Review
7 days
After 1 week
4th Review
14 days
After 2 weeks
5th Review
30 days
After 1 month
6th Review
90 days
After 3 months

Adjust intervals based on difficulty. Harder material may need shorter intervals.

Start Building Long-Term Memories Today

Generate practice quizzes from your study materials and start your spaced repetition schedule.

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Frequently Asked Questions

Everything you need to know about creating quizzes from PDFs with AI

What is spaced repetition?

Spaced repetition is a learning technique where you review material at increasing intervals over time. Instead of cramming all at once, you review after 1 day, then 3 days, then 7 days, and so on - right before you are about to forget.

What is the forgetting curve?

The forgetting curve, discovered by Hermann Ebbinghaus in 1885, shows that we forget about 70% of new information within 24 hours unless we review it. Spaced repetition strategically interrupts this forgetting process.

What are the optimal intervals for spaced repetition?

A common schedule is: 1 day, 3 days, 7 days, 14 days, 30 days, 90 days. However, the optimal interval depends on the difficulty of the material and individual learning. The key is to review just before you would forget.

How can I use QuizSmart for spaced repetition?

Generate quizzes from your study materials with QuizSmart, then retake them at spaced intervals. Track which questions you get wrong and focus on those in your next review session.