Based on the Leitner System for learning
Learn country capitals using the Leitner spaced repetition system.
Recommended: Start with Learn by continent — pick a region (e.g. Europe), choose a box, and begin studying. Type the capital, check your answer, and cards move between boxes based on how well you know them.
The Leitner System is a spaced repetition method for learning. Cards you know well are reviewed less often; cards you struggle with come up more frequently. This helps you focus on what you need to practice while keeping mastered material fresh.
Cards move through five boxes based on your performance:
Answer correctly and the card moves to the next box. Answer incorrectly and it goes back to Box 1. This keeps difficult cards in frequent rotation.
If the map is enabled in Settings, it will show the country’s location after you check your answer.
Raw facts like “France → Paris” are hard to remember on their own. Create a link between the country and its capital using a common word or a short phrase. For example: Paris sounds like pair — imagine a pair of French baguettes. Or: Lima (Peru) — picture a lime growing in the Peruvian jungle. These small associations make the connection stick.
On the continent view you’ll see cards grouped in columns by box. Click a card to start a study session for that region and box. Use Recommended distribution to split large regions into smaller groups. Edit mode lets you merge or split regions to customize how cards are organized.
Use the randomized mode for extra practice without affecting your Leitner boxes or trophies. Click 10 random countries for a quick session, or use the query builder to choose the number of questions (10, 25, 50, 100, or all) and the region (random across all continents, or a specific continent like Europe or Africa). Your answers in random mode are never saved.
Earn trophies as you progress: first correct answer, 10/50/100/1000 correct, first card in Box 5, one card from each region in Box 5, 25 countries in Box 5, mastering a continent, and becoming a World Explorer. Track your achievements on the main screen.