SubLingo - Learn any language while watching Netflix and YouTube
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SubLingo adds dual subtitles to Netflix and YouTube so every video becomes a language lesson.
How it works: See original + translated subtitles simultaneously. Hover any word for instant translation, pronunciation, and definition. Save words to build vocabulary with spaced-repetition flashcards.
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Hey Product Hunt! I'm Thien, the solo developer behind SubLingo.
I'm Vietnamese and have been learning English and other languages through TV shows for years. Subtitles were my secret weapon - but the tools out there felt either too expensive or too clunky. So I built my own.
SubLingo is a Chrome extension that turns Netflix and YouTube into language classrooms. Here's how it works:
Install on Chrome - no account needed, works offline
Watch with two subtitles - original language on top, your translation below, perfectly synced
Hover any word - get instant translation, pronunciation, and full definition without pausing
Save words in one click - each word is saved with context sentence, source video, image, and pronunciation
Practice daily - smart flashcards with quizzes, fill-in-the-blank, and listening exercises (FSRS spaced repetition, same algorithm as Anki)
Export anytime - CSV, TSV, or Anki format
Free tier gets you started: original subtitles, 5 hover translates/day, save up to 100 words, flashcard practice, and full export. Premium ($9/mo or $99 lifetime) unlocks unlimited dual subtitles, unlimited hover translate, unlimited word saving, cloud sync, custom subtitle styles, and focus mode.
Exclusive for PH supporters - two launch deals:
WELCOME → 50% off lifetime ($99 → $49.50)
CAMONBAN → 90% off monthly for 3 months ($9 → $0.90/mo)
Apply either code at sublingo.pro/pricing
48 languages supported. I'd love to hear which languages you're learning and what features you'd want next. I'm here all day!
Thanks for checking it out,
Thien