Create flashcards from what you read online, or import your own lists. Study with spaced repetition, quizzes, and Smart Review — with translations in 20 languages.
Research consistently shows that learning improves when you actively recall information instead of re-reading, test yourself regularly, and review material at increasing intervals. Flashcards and quizzes support all three — when used correctly.
As you browse articles, documents, or learning materials, select any important word or term. See the English definition with synonyms and examples. Add your own notes or custom definition. Save with one click — the word, definition, full sentence context, source page, difficulty level, and translation (if enabled) are captured automatically and turned into a flashcard.
Already have study materials? Import via CSV from Anki, Quizlet, or any spreadsheet. Bellek auto-detects the format. Combine imported cards with cards you save while browsing, and study everything in one system.
Multilingual Flashcards: Every flashcard can include a translation into your preferred language (20 languages supported). See both the English definition and the translation during review. Especially useful for language learners and international students.
Words you know appear less. Words you struggle with appear more. The algorithm adapts to your pace. Free for all users.
Test active recall, not just recognition. See the context sentence, pick the right word. Identify weak areas faster. (Premium)
Shows only words you've marked as difficult or keep getting wrong. Maximum focus on what needs work. (Premium)
Streaks, mastery rates, weekly goals, session history, and personalized insights. Know exactly where you stand.
Create collections for different subjects, courses, exams, or goals. Study one collection at a time or all at once. Track progress per collection to know which areas need more attention. 3 collections free, unlimited on Premium.
Add flashcards on desktop while studying. Scan the QR code from your dashboard to get a unique sync URL. Open it on your phone or tablet to review anywhere — no app download needed.
Flashcards from real content. Spaced repetition. Quiz mode. Free to start.
Add to Chrome — Free