LingoLens is a Chrome extension that translates the captions of the videos you watch into your language in real time, remembers the words you've seen, and turns the rest into vocabulary you keep.

Lingo sits in your browser, reads the captions as they happen, and keeps a running list of words you've seen — so you can tell what's new from what's clicking. No streaks to guilt-trip you. No deck to manage.
LingoLens layers dual captions and a self-building word bank onto whatever you're watching — you don't change a thing about how you watch. Two platforms today, and more on the way.
LingoLens activates the moment you open a video on a supported site. No URLs to paste, no buttons to press — just start watching.
Your target language on top, your native language below. Hover any word for definition, gender, and a usage example.
Hover a word, skip a word, mark one as known — LingoLens takes the note for you. No quizzes. No deck to manage. Just a map of the language you're actually learning.
Unknown words turn into flashcards in context — with the clip of the video where you saw them. Spaced repetition, but memorable.
No more abstract lists. Your saved words replay the exact second of video where you first met them.
20 languages and counting. Gendered nouns, regional variants, and fast native speech — all handled.
After a handful of videos, LingoLens knows which words to highlight for you and which to leave alone.
Your vocabulary lives on your account — never sold, never shared. We track what helps you learn, and nothing more.

Free Chrome extension. No credit card required.