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InterSub

Freemium
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AI-powered dual subtitles and instant word translations for language learning while watching videos

Adicionado em:13 de jul. de 2026
Visitantes mensais:
83.7K
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language learningAI subtitlesbrowser extensiondual subtitlesinstant translationvocabulary builder

Informações da ferramenta

O que é InterSub?

InterSub is a browser extension that helps users learn languages by watching videos with interactive dual or single subtitles, AI instant word translations, personal vocabulary tracking, and related learning tools on major streaming and educational platforms.

Recursos principais

  • AI-Assisted Dual Subtitles

    Watch videos with subtitles in the target language and native language side-by-side; translates subtitles on the fly if unavailable in the desired language.

  • Instant Word Translations

    Hover over any word in subtitles for an AI-generated instant definition and contextual translation; the video pauses automatically and the word is saved to personal vocabulary.

  • Personal Wordbook

    Automatically saves all translated words with translations and context; includes filters, search, history, and highlighting of frequently checked words for review.

  • Mobile Integration

    Sync personal wordbook to Anki and other mobile apps or Telegram bots for on-the-go learning.

  • Multi-Platform Support

    Works on YouTube, Netflix, Prime Video, HBO, Crunchyroll, TED, Coursera, Udemy, LinkedIn Learning, Disney+, Amazon Prime, Learn.Cantrill, Domestika, DW Learn German, Shahid, and more; also supports word lookup on almost any website.

  • Collocation Detection

    Advanced AI recognizes English phrasal verbs, idioms, and compound nouns.

  • Remote Control

    Use a phone browser as a remote to pause videos, view subtitles, get instant translations, rewind, or fast-forward while watching on a big screen.

  • Show Subtitles on Pause Mode

    Challenge mode that hides subtitles during playback and shows them only on pause for more immersive learning.

  • Multi-Language Support

    Supports over 30 languages including right-to-left (RTL) languages such as Arabic.

  • Browser Extension Compatibility

    Fully compatible with Google Chrome, Microsoft Edge, and Firefox; Safari and mobile version coming soon.

  • Auto Pause on Cursor Movement

    Automatically pauses video when hovering over subtitles so users never miss a word.

Casos de uso

  • #1

    Language Learning While Streaming Entertainment

    Improve vocabulary and comprehension by watching shows and anime on Netflix, YouTube, Crunchyroll, Disney+, Prime Video, and similar platforms with dual subtitles and instant lookups.

  • #2

    Educational Course Language Practice

    Learn languages or subject terminology while taking courses on Coursera, Udemy, LinkedIn Learning, TED, and similar educational platforms.

  • #3

    Vocabulary Building and Review

    Build and review a personal wordbook of checked words, collocations, and frequently looked-up terms, then sync for spaced practice via partner apps.

  • #4

    Immersive Big-Screen Viewing with Remote Help

    Watch content on a large screen while using a phone remote for subtitle viewing and instant translations without interrupting playback.

Melhor para:Language learnersNon-native speakers improving English, Spanish, or other languagesStudents using educational video platformsViewers who want dual subtitles or instant dictionary help while streaming

Planos de preços

Chrome extension can be installed for free and the product offers a free trial; homepage testimonials reference a paid subscription for continued use. Detailed plan prices are not listed on the provided official snapshots.

Alternativas

Perguntas frequentes

What is InterSub?
InterSub is a browser extension offering AI-powered dual subtitles and instant word translations to help users learn languages while watching streaming and educational videos.
Which platforms and services does InterSub support?
It works on YouTube, Netflix, Prime Video, HBO, Crunchyroll, TED, Coursera, Udemy, LinkedIn Learning, Disney+, Amazon Prime, Learn.Cantrill, Domestika, DW Learn German, Shahid, and more. It also supports word lookup on almost any website.
Is InterSub free?
InterSub uses a freemium model. The Chrome extension can be installed for free and offers a free trial. A paid subscription is referenced for continued use, though detailed plan prices are not clearly published by the official source.
Which browsers work with InterSub?
It is fully compatible with Google Chrome, Microsoft Edge, and Firefox. Safari support and a mobile version are listed as coming soon.
How does the personal wordbook and mobile sync work?
All translated words are automatically saved with translations and context, with filters, search, history, and highlighting of frequently checked words. The wordbook can be synced to Anki and other mobile apps or Telegram bots for on-the-go learning.
How many languages does InterSub support?
It supports over 30 languages, including right-to-left (RTL) languages such as Arabic.

InterSub Contato e mídias sociais

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Informações da ferramenta

Modelo de preçosFreemium
CategoriaFerramentas de Vídeo
Tags
language learningAI subtitlesbrowser extensiondual subtitlesinstant translationvocabulary builder
IdiomaInglês
Última atualização16 de jul. de 2026