Sensim — Learn 100 Languages While You Browse

Master words through daily flashcards, then see them replace English as you browse. 3 new words per day, 1000-day journey.

Sensim replaces English words on every page you browse with their equivalent in your chosen language — but only words you've already proven you know. HOW IT WORKS Every day, 3 new words unlock in your flashcard deck. Review them in under 2 minutes. Get a word right 3 out of 4 days and it graduates to your browser. From that point on, every time that word appears on a page you visit, you see it in your target language instead of English. No drilling. No lessons. Just your normal browsing, gradually becoming immersion. If you keep hovering a graduated word to check its meaning, Sensim notices — and sends it back to your deck automatically. Words only stay in your browser when you've genuinely absorbed them. THE 1,000-DAY JOURNEY 3 words per day. 1,000 days. 3,000 words. That's upper-intermediate vocabulary in any language — enough to read a newspaper, follow a conversation, understand a film. Built invisibly, one browsing session at a time. 100 LANGUAGES Spanish · French · German · Japanese · Korean · Mandarin · Arabic · Hindi · Russian · Portuguese · Italian · Turkish · Persian · Swahili · Vietnamese · Thai · Indonesian · Polish · Dutch · Swedish · Norwegian · Danish · Finnish · Hungarian · Romanian · Czech · Greek · Hebrew · Bengali · Punjabi · Urdu · Tagalog · Malay · Tamil · Georgian · Armenian · Mongolian · Kazakh · Tibetan · Burmese · Khmer · and 59 more — including Cherokee, Nahuatl, Hawaiian, Welsh, Irish, Lakota, Ojibwe, Quechua, Aymara, and other indigenous and endangered languages treated with the same care as the rest. PRIVACY FIRST All progress is stored locally in your browser. No account required. No data sold or shared. No ads. Ever. Sensim is not a language app. It's a layer on top of the life you already live.