Submate: Dual Subtitles for TV

Learn languages from YouTube videos you already watch. Immerse yourself with dual subtitles, save moments as flashcards, and review them with AI-powered FSRS scheduling.

Submate helps you learn languages from YouTube videos you already watch.

Watch YouTube on your TV and Submate will show dual subtitles on your phone, then click the star to save useful moments as video flashcards. Watching YouTube on your phone or tablet instead of your TV? Simply take a screenshot to create flashcards from those moments too.

Every flashcard is a video flashcard created from YouTube content you chose to watch yourself, so you study real dialogue in context instead of isolated word lists.

Features:

• Watch YouTube on your TV with dual subtitles
• Save subtitle moments as flashcards
• Screenshot parts of YouTube videos on phone or tablet to save as flashcards
• Review flashcards made from real videos
• See translations and word-level learning help
• Use AI-powered FSRS review scheduling to only study cards right before you are predicted to forget them
• Build a personal library of words and phrases from videos you actually care about

Submate is built for language learners who want to turn watching YouTube into active study without leaving the content they already enjoy.

Submate is not affiliated with YouTube or Google.

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