Bellek - Smart Vocabulary Builder

Look up words as you browse, see definitions & translations, save with context & learn with smart spaced repetition flashcards.

Stop forgetting the words you look up. Bellek is a smart vocabulary builder that turns passive reading into active learning in any language. If you've ever looked up a word and forgotten it five minutes later, this vocabulary builder is for you. Highlight any word on any webpage to get the definition, synonyms, audio pronunciation, and the translation into your native language instantly. Save it with one click. Bellek captures the source URL and the original sentence as context so you always remember where you found it. Whether you're expanding your English vocabulary, studying for IELTS or TOEFL, reading in a foreign language, or collecting words that catch your eye — this vocabulary builder gives you one place to save, organize, study, and actually remember them. Bellek is the browser dictionary and vocabulary tracker that replaces scattered word lists, note-taking apps, and translation tools: everything in one place. New in 1.5: free accounts with cloud backup, audio pronunciation on every word, and a new subscription system with a self-serve billing portal. 🌍 ENGLISH DEFINITIONS + TRANSLATIONS IN 20 LANGUAGES Highlight any English word to see its definition and translation in your chosen language instantly — with full definitions and synonyms on Premium. Reading in another language? Bellek detects the page language automatically and translates any word into your chosen native language. Reading a Japanese blog and need it in Turkish? Browsing a Spanish article and want it in German? Set your native language once and Bellek handles the rest. Supports 20 languages including Turkish, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Japanese, Korean, Hindi, Chinese, Dutch, Polish, Swedish, Thai, Ukrainian, Vietnamese, and Indonesian. 🔊 AUDIO PRONUNCIATION Tap the speaker button on any looked-up or saved word to hear it spoken aloud — in the popup, on your dashboard, and on flashcards while you study. Powered by Merriam-Webster. Free for everyone. 🧠 FLASHCARDS, QUIZZES & SPACED REPETITION This vocabulary builder doesn't just save words, it helps you actually learn them. Study with flashcards using spaced repetition, test yourself with multiple choice quizzes, or focus on your weak spots with Smart Review. Track your streak and mastery level for every word. Built for real vocabulary retention, not just word collecting. 📂 ORGANIZE YOUR VOCABULARY Group words into collections by topic, project, or language. Filter, sort, and search across everything. Import word lists from CSV or export anytime. One system instead of scattered notes, screenshots, and forgotten bookmarks. 📱 STUDY ON THE GO Scan the QR code from your extension to open bellek.app on your phone. Review flashcards and study your saved vocabulary on the bus, in a waiting room, or between classes. iOS and Android apps coming soon! 🔒 PRIVATE BY DESIGN Your data lives locally in your browser — no account needed for free use. Create an optional free account to back up your words and progress to the cloud. We never sell your data, track your browsing, or show ads. Card payments are handled entirely by Stripe; we never see your card details. 💡 NON-INTRUSIVE DESIGN Turn the definition popup on or off anytime from the extension icon. Bellek stays out of your way when you don't need it. 💎 FREE VOCABULARY BUILDER Unlimited dictionary lookups Audio pronunciation 20 saved words 3 collections Unlimited flashcards with spaced repetition 3 translations per day CSV import & export 💎 PREMIUM (7-day free trial on monthly & yearly plans) Full definitions & synonyms on every lookup Unlimited saved words Unlimited collections Unlimited translations Multiple Choice Quiz mode Smart Review — focus on your weak words Unlimited CSV imports 🎯 BUILT FOR Anyone who wants to express themselves better English (ESL / EFL) learners building everyday vocabulary Language learners studying English, French, Spanish, German, Turkish, Japanese, and 14 more languages Students preparing for IELTS, TOEFL, GRE, or university exams who need flashcards and spaced repetition Avid readers who want to learn new words Anyone tired of forgetting the words they look up