Master Any Subject Faster with Spaced Repetition

Flashcards World is a smart study app designed to help you remember information for the long term. We use a science-backed learning technique called spaced repetition, scheduling your reviews right before you are about to forget so every study session is more efficient.

You can access Flashcards World everywhere you learn: a powerful web app for desktop and laptop, a native iOS app for iPhone and iPad, and a native Android app for phones and tablets. Your progress syncs instantly across every device so you always pick up right where you left off.

Yes. Our native iOS and Android apps let you study, create cards, and review without an internet connection. When you reconnect, the app automatically syncs your progress so every device stays up to date.

Absolutely. Our free plan gives you access to all the core study features you need, including our spaced repetition algorithm, unlimited flashcard creation and sharing, and automatic sync across devices. We also offer an optional Premium subscription with detailed analytics, custom study modes, and enhanced classroom management tools for teachers.

Our adaptive algorithm tracks how easily you recall each flashcard. Cards you struggle with appear more often, while mastered cards are scheduled further apart, helping you build durable long-term memory without wasting time on what you already know.

Yes. You can build rich, multimedia flashcards with text, high-resolution images, audio clips, and more—perfect for vocabulary, anatomy, pronunciation practice, and any subject that benefits from visuals or sound.

Switching is simple. Import existing decks from other flashcard tools using common formats such as CSV or TXT, or connect directly to supported platforms so you can keep the cards you already rely on.