The Leitner System
The 7-box method for lasting memorization — invented by Sebastian Leitner in the 1970s, used by millions of students worldwide.
What is the Leitner system?
Sebastian Leitner was a German science journalist. In his book "So lernt man lernen" (1972), he described a simple but devastatingly effective method for memorizing anything: flashcards organized into boxes.
The principle: every card starts in box 1. Answer correctly and it moves up one box, meaning it will be reviewed less often. Answer wrong and it goes back to box 1. Hard cards are seen often, mastered cards rarely. Result: zero time wasted on what you already know.
MagicCards' 7 boxes
The higher a card climbs, the less often it's reviewed. Your time focuses on what you haven't mastered yet.
New or missed cards
Every day
Cards seen once
Every 2 days
Cards on track
Every 4 days
Well-known cards
Every week
Very well-known cards
Every 2 weeks
Nearly mastered
Every month
Mastered cards
Every 3 months
Learned card
Never reviewed again unless missed
Spaced repetition vs. cramming
❌ Cramming
- • Review everything the night before
- • Short-term memorization only
- • Forgotten within days
- • Long and exhausting sessions
- • Stress and cognitive fatigue
✅ Spaced repetition
- • Short daily sessions
- • Information in long-term memory
- • Near-zero forgetting
- • 10–15 minutes a day is enough
- • Visible, measurable progress
How does it work in practice?
Create your cards
Each card has a front (question/term) and a back (answer/definition). All cards start in box 1.
Review every day
MagicCards shows you only the cards due that day — no more, no less.
Be honest with yourself
Correct answer → card moves up one box, reviewed less often. Wrong answer → back to box 1.
Repeat until mastered
A card that stays in box 7 for 3 months without error is considered learned. You've truly memorized it.
Frequently asked questions
What is the Leitner system?
The Leitner system is a memorization method invented by Sebastian Leitner in the 1970s. It uses numbered boxes: a card you know well moves to a box reviewed less often, while a missed card goes back to box 1. This optimizes your study time.
How many boxes does the Leitner system have?
The classic version uses 5 boxes. MagicCards uses 7 for finer granularity: from 'every day' (box 1) to 'every 3 months' (box 7). A card that clears box 7 is considered learned.
What is the difference between cramming and spaced repetition?
Cramming means reviewing everything right before an exam: information is memorized short-term and quickly forgotten. Spaced repetition spreads reviews over time at precisely the moment the brain is about to forget, anchoring information in long-term memory.
How do I use the Leitner system with MagicCards?
Create a flashcard deck, add your questions and answers, then review every day. MagicCards automatically manages the boxes: correct answer = card moves up one box, wrong answer = card returns to box 1.
Ready to memorize smarter?
MagicCards applies the Leitner system automatically. Pick a deck, review 10 minutes a day, track your progress.