# metheus-app

> Turn the web and streaming video into your language-learning workspace.

Canonical page: [https://chrome-stats.com/d/metheus-app](https://chrome-stats.com/d/metheus-app)

## Overview

- **ID:** `metheus-app`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Metheus App
- **Category:** feeds-news-blogging,language-support,photos-music-videos
- **Daily users:** 1
- **Weekly downloads:** 1
- **Version:** 1.0.4
- **Last updated:** 2026-07-28
- **First published:** 2026-03-07
- **Size:** 3.37 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/metheus-app/)
- **Website:** [https://github.com/GisaacPr](https://github.com/GisaacPr)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/metheus-app/privacy/](https://addons.mozilla.org/firefox/addon/metheus-app/privacy/)

## Description

Learn languages through videos, browsing, and the content you actually love. 100% free.

Metheus turns YouTube, Netflix, social media, and any website into your personal language learning platform. Enjoy native content without switching tabs, breaking your flow, or paying expensive subscriptions.

✨ Beginners → Build a strong foundation from day one with +1,000 built-in essential decks & courses.

✨ Intermediate & Advanced → Consume native content much sooner using interactive subtitles and context-aware reading tools.

🚀 How It Works
Browse 🌐 → Open any video, news article, or website that interests you.

Explore 🔍 → Click any unknown word or press Ctrl+D for instant contextual definitions.

Mine ⚡ → Create media-rich flashcards (sentence, audio, screenshot, and source URL) with a single click.

Master 📈 → Review and sync all your progress seamlessly on metheus.app.

🌟 WHAT MAKES METHEUS UNIQUE
🎯 +1,000 Essential Decks & Courses
• Integrated vocabulary lists focusing on high-frequency words. Start learning immediately without spending hours building decks from scratch.

🎬 Video & Streaming Immersion
• Interactive subtitles across your favorite video platforms.
• Custom keyboard shortcuts to repeat dialogue, auto-pause, and capture vocabulary on the fly.

📖 Instant Contextual Dictionary (Ctrl+D)
• Real-time lookups on any webpage. Get the precise definition for the specific sentence you're reading, not just generic entries.

🎨 Smart Text Highlighting
• Metheus color-codes words on any website based on your learning status (Known, Learning, or New) so you can track progress visually.

⚡ 1-Click Media-Rich Flashcards
• Capture full flashcards containing the target word, surrounding sentence, native audio, screenshot, and original source link.

🆓 100% Free & Unlimited
• Unlimited access to every immersion and mining feature with no paywalls, trial periods, or credit cards required.

🔒 Privacy & Permissions:

Metheus requests page access strictly to render overlay tools, subtitles, and dictionary popups. It runs using local storage, contains zero ad trackers, and respects your privacy.

## Rankings

- #113,988 — Overall

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `contextMenus`
- `webRequest`
- `webRequestBlocking`
- `clipboardWrite`
- `<all_urls>`

### Content script matches

- `app.asbplayer.dev`
- `killergerbah.github.io`
- `*.archive.org`
- `*.bbc.co.uk`
- `*.bbc.com`
- `*.bloomberg.com`
- `*.cijapanese.com`
- `*.cnn.com`
- `*.dev.to`
- `*.discord.com`
- `*.duolingo.com`
- `*.facebook.com`
- `*.forbes.com`
- `*.genius.com`
- `*.github.com`
- `*.goodreads.com`
- `*.imdb.com`
- `*.instagram.com`
- `*.linkedin.com`
- `*.medium.com`
- `*.nytimes.com`
- `*.osnplus.com`
- `*.patreon.com`
- `*.pinterest.com`
- `*.producthunt.com`
- `*.quora.com`
- `*.reddit.com`
- `*.stackexchange.com`
- `*.stackoverflow.com`
- `*.substack.com`
- `*.theguardian.com`
- `*.theverge.com`
- `*.tiktok.com`
- `*.tumblr.com`
- `*.twitch.tv`
- `*.twitter.com`
- `*.viki.com`
- `*.wikipedia.org`
- `*.wired.com`
- `*.wordpress.com`
- `*.x.com`
- `*.youtube.com`
- `archive.org`
- `areena.yle.fi`
- `cijapanese.com`
- `news.ycombinator.com`
- `open.spotify.com`
- `osnplus.com`
- `play.hbomax.com`
- `play.max.com`
- `tv.nrk.no`
- `tver.jp`
- `urplay.se`
- `video.unext.jp`
- `web.stremio.com`
- `web.telegram.org`
- `web.whatsapp.com`
- `www.amazon.com`
- `www.apps.disneyplus.com`
- `www.b-ch.com`
- `www.bilibili.tv`
- `www.disneyplus.com`
- `www.hulu.com`
- `www.hulu.jp`
- `www.iwanttfc.com`
- `www.netflix.com`
- `www.primevideo.com`
- `www.svtplay.se`
- `www.twitch.tv`
- `127.0.0.1`
- `localhost`
- `metheus.app`
- `www.metheus.app`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/metheus-app)