---
title: "Osmolog - Language Immersion Tracker – Chrome extension stats, history and permissions"
description: "42 users, rated 5.00 by 5 people. Version 2.4.5, updated 2026-10-26. Requests 30 permissions."
url: "https://extensiontracker.com/extension/hdcaefdnakpmieoajmhmmmlmgdamekdn"
---

# Osmolog - Language Immersion Tracker

**Removed from the Chrome Web Store on 13 Nov 2026.** This extension is no longer available on the Chrome Web Store. It may have been removed by the developer or taken down by Google. It has left the store's daily lists, and the store no longer offers it for Chrome to install. The figures are as last seen on 27 Oct 2026.

- Users: 42
- Rating: 5.00 from 5 ratings
- Last checked: 2026-10-27 05:43 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: +1 (+2.4%)

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Automatically track language immersion on YouTube, Netflix, Crunchyroll & Twitch. Anki integration. No account required.

- Extension ID: `hdcaefdnakpmieoajmhmmmlmgdamekdn`
- Developer: [Osmolog](https://extensiontracker.com/developer/u81255357ce55139a1dcfb344c6d457f8)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Education](https://extensiontracker.com/category/productivity/education)
- First published: 2026-07-20
- Last updated: 2026-10-26
- Version: `2.4.5`
- Size: 2.55 MiB
- Minimum Chrome: 116
- Languages (1): English
- Support page: `https://www.osmolog.com/#faq`
- Search Google for the ID: <https://www.google.com/search?q=%22hdcaefdnakpmieoajmhmmmlmgdamekdn%22&tbs=li:1>
- Archived copies of the listing: <https://web.archive.org/web/*/https://chromewebstore.google.com/detail/osmolog-language-immersio/hdcaefdnakpmieoajmhmmmlmgdamekdn*>
- Archived copies at the store's old address: <https://web.archive.org/web/*/https://chrome.google.com/webstore/detail/osmolog-language-immersio/hdcaefdnakpmieoajmhmmmlmgdamekdn*>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-10-27 | 42 | 5.00 | 5 |
| 2026-10-23 | 41 | 5.00 | 5 |
| 2026-10-21 | 37 | 5.00 | 5 |
| 2026-10-16 | 41 | 5.00 | 5 |
| 2026-10-13 | 41 | 5.00 | 5 |
| 2026-10-11 | 39 | 5.00 | 5 |
| 2026-10-09 | 39 | 5.00 | 5 |
| 2026-09-27 | 90 | 5.00 | 5 |

## What changed

Every change found on a check, newest first.

- 2026-11-13: Removed from the Chrome Web Store.
- 2026-10-27: New version `2.4.5`, replacing `2.4.2`.
- 2026-10-23: New version `2.4.2`, replacing `2.4.1`.
- 2026-10-21: New version `2.4.1`, replacing `2.3.6`.
- 2026-10-16: New version `2.3.6`, replacing `2.3.4`.
- 2026-10-13: New version `2.3.4`, replacing `2.3.1`.
- 2026-10-11: New version `2.3.1`, replacing `2.3.0`.
- 2026-10-11: The summary on the listing changed.
- 2026-10-11: Added the site `https://crunchyroll.com/*`. Removed the site `https://khfizbjmhevmxwtnekvb.supabase.co/*`.
- 2026-10-11: Removed the optional permissions `offscreen`, `tabCapture`.
- 2026-10-11: Added the site where it runs scripts `https://crunchyroll.com/*`.
- 2026-10-09: New version `2.3.0`, replacing `2.2.2`.
- 2026-10-09: Added the site `https://netflix.com/*`.
- 2026-10-09: Added the site where it runs scripts `https://netflix.com/*`.
- 2026-10-01: Now trusted by Enhanced Safe Browsing.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

### Sites

- `https://crunchyroll.com/*`: crunchyroll.com
- `https://m.twitch.tv/*`: m.twitch.tv
- `https://music.youtube.com/*`: music.youtube.com
- `https://netflix.com/*`: netflix.com
- `https://open.spotify.com/*`: open.spotify.com
- `https://play.max.com/*`: play.max.com
- `https://play.pocketcasts.com/*`: play.pocketcasts.com
- `https://podcasts.apple.com/*`: podcasts.apple.com
- `https://store.steampowered.com/*`: store.steampowered.com
- `https://tubitv.com/*`: tubitv.com
- `https://tv.apple.com/*`: tv.apple.com
- `https://twitch.tv/*`: twitch.tv
- `https://www.crunchyroll.com/*`: www.crunchyroll.com
- `https://www.disneyplus.com/*`: www.disneyplus.com
- `https://www.hidive.com/*`: www.hidive.com
- `https://www.hulu.com/*`: www.hulu.com
- `https://www.netflix.com/*`: www.netflix.com
- `https://www.paramountplus.com/*`: www.paramountplus.com
- `https://www.peacocktv.com/*`: www.peacocktv.com
- `https://www.twitch.tv/*`: www.twitch.tv
- `https://www.youtube.com/*`: www.youtube.com
- `https://youtube.com/*`: youtube.com

### Sites where it runs scripts

- `https://crunchyroll.com/*`: crunchyroll.com
- `https://m.twitch.tv/*`: m.twitch.tv
- `https://music.youtube.com/*`: music.youtube.com
- `https://netflix.com/*`: netflix.com
- `https://open.spotify.com/*`: open.spotify.com
- `https://play.max.com/*`: play.max.com
- `https://play.pocketcasts.com/*`: play.pocketcasts.com
- `https://podcasts.apple.com/*`: podcasts.apple.com
- `https://tubitv.com/*`: tubitv.com
- `https://tv.apple.com/*`: tv.apple.com
- `https://twitch.tv/*`: twitch.tv
- `https://www.crunchyroll.com/*`: www.crunchyroll.com
- `https://www.disneyplus.com/*`: www.disneyplus.com
- `https://www.hidive.com/*`: www.hidive.com
- `https://www.hulu.com/*`: www.hulu.com
- `https://www.netflix.com/*`: www.netflix.com
- `https://www.paramountplus.com/*`: www.paramountplus.com
- `https://www.peacocktv.com/*`: www.peacocktv.com
- `https://www.twitch.tv/*`: www.twitch.tv
- `https://www.youtube.com/*`: www.youtube.com
- `https://youtube.com/*`: youtube.com

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `alarms`: Run tasks on a schedule
- `idle`: Detect when you're away from the computer
- `notifications`: Show notifications
- `scripting`: Run scripts on sites it can reach
- `sidePanel`: Show a side panel
- `storage`: Save settings and data in your browser
- `unlimitedStorage`: Store more data than the usual limit

### Asked for later, if you agree

- `http://*/*`: Every website
- `https://*/*`: Every website

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-10-27 05:43 UTC.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Osmolog - Language Immersion Tracker” (hdcaefdnakpmieoajmhmmmlmgdamekdn). Chrome Web Store data, last checked 2026-10-27. https://extensiontracker.com/extension/hdcaefdnakpmieoajmhmmmlmgdamekdn. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_hdcaefdnakpmieoajmhmmmlmgdamekdn,
  title   = {Osmolog - Language Immersion Tracker (hdcaefdnakpmieoajmhmmmlmgdamekdn)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-10-27},
  url     = {https://extensiontracker.com/extension/hdcaefdnakpmieoajmhmmmlmgdamekdn},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/hdcaefdnakpmieoajmhmmmlmgdamekdn>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.
