Study with Flashcards and Spaced Repetition
Create decks of question / answer cards or paste a list, then study by flipping the cards: the Leitner system makes you review what you don't know yet first. Your decks stay in your browser.
- Leitner system
- List import
- JSON or CSV export
- No sign-up
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to study with flashcards
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Create a deck
Add your cards one by one, or paste a list with one card per line in the format "question ; answer".
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Flip the cards
Read the question, recall the answer in your head, flip the card, then mark whether you got it right or wrong.
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Come back regularly
Cards you get right move up to the next box and come back less often; cards you miss go back to box 1.
Everything you need to remember for the long term
Leitner spaced repetition
5 boxes: your effort goes into the hard cards, and the cards you've mastered come back less and less often.
Quick import
Paste dozens of "question ; answer" lines from your notes at once, or start from the sample deck provided.
Shuffle mode and stats
Study the cards in random order so you don't just memorize the deck's order, and track your progress session after session.
Export, import and print
Back up or share a deck as a JSON or CSV file, and print your cards to study on paper.
Why flashcards work
A flashcard makes you test yourself: you read the question, recall the answer from memory, then check. This active recall locks in knowledge far better than simply rereading highlighted notes. Flashcards work for anything you learn in pairs: foreign language vocabulary, history dates, math or physics formulas, legal or medical definitions, capitals, verb conjugations. To make good cards, ask one question per card, word it precisely and keep the answer short: "Capital of Australia?" → "Canberra", rather than a whole paragraph. Twenty simple cards beat five overloaded ones. Shuffle mode also stops you from memorizing the answers in the deck's order instead of really knowing them.
The Leitner system, or spaced repetition
Devised by German science journalist Sebastian Leitner in the 1970s, this method sorts cards into numbered boxes; the tool uses 5. All cards start in box 1. Each time you answer correctly, the card moves to the next box and will come back less often; a mistake sends it back to box 1, whichever box it was in. So a card that reaches box 5 is one you've gotten right several times in a row. The result: your study time goes into what you don't know yet, instead of endlessly going over cards you already know. The key is consistency: short, frequent sessions beat one long cram session the night before the exam.
Import a list and back up your decks
To create a deck in seconds, paste a list with one card per line, the question and answer separated by a semicolon: "emprunter ; to borrow", "Signing of the Declaration of Independence ; July 4, 1776". Your decks are saved in your browser, on this device: they're not sent to any server, but they disappear if you clear the site's data. So remember to export your important decks as a JSON or CSV file: that file works as a backup, can be re-imported on another computer or shared with a classmate. You can also print the cards to study away from screens. A sample deck is included so you can try the tool before creating your own.
Frequently Asked Questions
How do I make study flashcards?
Write a short question on the front and the answer on the back, with one idea per card. In the tool, add your cards one by one or paste a list in the format "question ; answer".
What is the Leitner system?
A spaced repetition method that sorts cards into boxes: a card you get right moves to the next box and comes back less often, a card you miss goes back to box 1. The tool uses 5 boxes.
Are flashcards effective for studying?
Yes, because they make you retrieve information from memory instead of just rereading it, and spaced repetition brings it back at longer and longer intervals. They're especially useful for vocabulary, dates, definitions and formulas.
Are my flashcards saved?
Yes, in your browser, on this device, with no account. To use them on another device or protect them from a browser cleanup, export them as JSON or CSV and then re-import the file.
Can I print my flashcards?
Yes, the tool lets you print the cards in a deck to study on paper, for example on your commute or before an exam.