What is spaced repetition?

Spaced repetition is a study technique that shows you each flashcard at increasing time intervals — soon after learning, then after a few days, then longer — so you review weak cards often and strong cards rarely. It is the most efficient way to move facts into long-term memory.

Are the flashcards free?

Yes — Syllab flashcards are 100% free, need no sign-up, and your decks are saved on your own device. The scheduler uses the proven SM-2 spaced-repetition algorithm.

Free Flashcards with Spaced Repetition

Make free flashcards and study smarter with spaced repetition (SM-2). Create your own decks, flip cards, and let the app schedule each card for the perfect time to review. Saved on your device. For CBSE, JEE & NEET.

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TL;DR: Make free flashcards and study smarter with spaced repetition (SM-2). Create your own decks, flip cards, and let the app schedule each card for the pe…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 14, 2026

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Make free flashcards and study smarter with spaced repetition. Create your own decks, flip each card, and rate how well you knew it — the app then schedules every card for the ideal day to review it again. Everything is saved on your own device; no sign-up.

Why spaced-repetition flashcards work

Flashcards use active recall — retrieving an answer from memory builds far stronger recall than re-reading notes. Spaced repetition then shows each card at growing intervals (1 day, 6 days, then longer), reviewing weak cards more often and easy ones less. It is the most efficient way to memorise formulas, definitions, dates and vocabulary for CBSE boards, JEE and NEET.

How to use it

Add cards with a question on the front and the answer on the back, tap “Study now”, reveal each answer, then rate it Again, Hard, Good or Easy. The proven SM-2 scheduler picks the next review date. Pair your decks with the free study planner and mock tests.