Subtys: Learn Languages with Dual Subtitles

Watch your favorite videos with dual subtitles. Tap a word to save it and learn it with spaced-repetition flashcards and games.

Learn English where you already spend your time. Subtys adds dual subtitles to the videos you watch: the original line on top, your language right under it. Tap a word you don't know and the AI explains what it means in this exact scene. Save it in one click, then make it stick with flashcards, games and conversation practice on subtys.com. HOW IT WORKS 1. Watch – turn on dual subtitles on YouTube (and on Netflix with a paid plan). 2. Tap a word – see what it means in this scene and in general, hear it in US or UK English, and save it to a deck together with the sentence it came from. 3. Remember – your words come back as flashcards right before you'd forget them, and in quick games. AI THAT GETS REAL SPEECH Slang, idioms and jokes don't translate word for word. Subtys AI translates what people actually mean, so "this pup is straight fire" comes out as "this dog is amazing", not as nonsense about fire. Tap any word for its full breakdown: every meaning, in your language. PRACTICE THAT STICKS • Spaced-repetition flashcards (FSRS, the scheduler Anki uses) • 5 review modes: flashcards, multiple choice, anagram, speaking and typing • Pronunciation scored sound by sound when you practise out loud • Lots of games: Memory, Wordle, Crossword, Listen and more • Hard words come back sooner, easy ones wait longer SPEAK WITH AI Practise real conversations out loud: ordering at a café, checking into a hotel, a job interview. The AI stays in character, corrects your mistakes and suggests words worth using. ALL OF ENGLISH IN ONE PLACE • 100+ grammar lessons from A1 to C2 • Irregular verbs with all three forms • The 2,800 most common English words – about 90% of everyday speech • Everyday phrases, and memes with translations (SubMem) • Decks by topic that you can share with a friend by code FREE TO START Free forever, no card needed. The free plan includes dual subtitles on YouTube, 200,000 translation characters and 20,000 Subtys AI characters a month, 10 detailed word lookups a day, 4 AI conversations a month, up to 5 decks, and every review mode and game. Paid plans on subtys.com add Netflix and raise the limits. Interface and translations in 11 languages: English, Ukrainian, Russian, Spanish, German, French, Polish, Italian, Portuguese, Turkish and Japanese. PRIVACY • Subtys runs only on YouTube, Netflix and subtys.com. It reads only the subtitles of the video you're watching – never your browsing history or other sites. • When Chrome's built-in translator is available, subtitles can be translated right on your device. • No ads. We never sell your data or use it for advertising. • Delete your account and all your learning data at any time in Settings. YouTube is a trademark of Google LLC. Netflix is a trademark of Netflix, Inc. Subtys is an independent product and is not affiliated with or endorsed by them.