Linglass icon
Linglass icon

Linglass

Linglass turns YouTube and Netflix into a language lesson: dual subtitles, click-to-translate, pronunciation, AI grammar, and spaced-repetition flashcards — as a browser extension, website, and iOS app.

Dual subtitles on YouTube, original + translation side by side

Cost / License

  • Freemium (Subscription)
  • Proprietary

Application type

Platforms

  • Online
  • iPhone
  • Google Chrome
Contextual translation — save any word or phrase in one click
AI grammar breakdown for any sentence
+2
Spaced-repetition flashcards with real video context
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Features

Properties

  1.  Distraction-free
  2.  Lightweight
  3.  Educational
  4.  AI-Powered

Features

  1.  Dark Mode
  2.  Cloud Sync
  3.  Ad-free
  4.  Built-in Dictionary
  5.  Text to Speech
  6.  Browser extension
  7.  Learn with Flashcards
  8.  Translator
  9.  Srs

 Tags

Linglass News & Activities

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Linglass information

  • Developed by

    Unknown

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription that costs from $8 per month + free version with limited functionality.

  • Alternatives

    8 alternatives listed

  • Badge

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  • Supported Languages

    • English
    • Arabic
    • Chinese
    • Czech
    • Dutch
    • French
    • German
    • Hindi
    • Indonesian
    • Italian
    • Japanese
    • Korean
    • Polish
    • Portuguese
    • Russian
    • Spanish
    • Swedish
    • Thai
    • Turkish
    • Vietnamese
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Official Links

AppStores & Other Links

Download from iPhone App Store

What is Linglass?

Linglass is a language-learning toolkit that turns the videos you already watch into immersive lessons. It shows dual subtitles — the original language and your translation at the same time — on YouTube and Netflix, and lets you learn from real, native content instead of textbook drills.

What it does:

  • Dual subtitles on YouTube and Netflix, perfectly synced side by side.
  • Click any word or phrase for an instant, context-aware translation (powered by DeepL), IPA phonetic transcription, and text-to-speech pronunciation.
  • AI grammar explanations — ask why a sentence is built the way it is and get a clear, LLM-powered breakdown.
  • AI auto-subtitles for videos that have no captions at all — smart segmentation and AI translation generate them for you.
  • Save words as flashcards and review them with a built-in FSRS spaced-repetition system so they actually stick.
  • Discover — a curated catalog of videos scored by difficulty (CEFR / JLPT / HSK / TOPIK and more) so you always find content at your level.

Languages you can learn: English, Spanish, French, German, Italian, Portuguese, Russian, Japanese, Chinese, and Korean — with contextual translation available across many more.

Where it runs: Chrome, Edge, and Yandex Browser (extension), the web app at linglass.app, and iOS. Android is on the way.