metheus-app

Name: metheus-app
Author: Metheus App

By: Metheus App Add-on

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

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-15

Version:

1.0.4

Last updated: 2026-07-28

Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

Metheus App

Daily users:

Version:

1.0.4 Last updated: 2026-07-28

Version code:

6380739

Creation date:

2026-03-07

Risk:

Permissions:

Content scripts matches:

app.asbplayer.dev
killergerbah.github.io
*.archive.org
*.bbc.co.uk
*.bbc.com
*.bloomberg.com
*.cijapanese.com
*.cnn.com
*.dev.to
*.discord.com

Size:

3.37MB

Email:

me*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-15

Compare stats and ranking:

Ranking

# 132,685 ▲ 3,275

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Metheus App

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/metheus-app/

Email:

me*****@gmail.com

Website:

https://github.com/GisaacPr

Is metheus-app Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

metheus-app requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
Critical ******* ****** ** *** ********* ******** ************** ********** ************ ****** ******** ************** *************** ******** ******* ************ ************* ************* *********** *********** *********** ************** ********* ************** ************* *********** ************ ************ ************ ************** **************** ********** *********** ****************** ****************** ************* **************** ************* *********** *********** ********** ************ ********* ************** ********** ************** ****** ************ ******* **************** ************ *********** ******** ******* ******** ********** ********* ************ ************* ************* *********** *************** ********* ************ ********* ******** ************* ************ *************** *********** **** ********** ***********
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

metheus-app may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****