LingoLens is a Chrome extension that translates Spanish captions into English in real time, remembers the words you've seen, and turns the rest into flashcards.

Lingo sits in your YouTube tab, reads the Spanish 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 activates the moment a YouTube tab loads. 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 Spanish 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 flashcards replay the exact second of Spanish video where you first met the word.
One language pair, focused. Gendered nouns, regional variants, and fast native speech — 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.