Check Your Friend by Mateo
Reports only the domain of the active tab to the Check Your Friend desktop app so websites are categorised correctly. No titles, no paths, never in private windows.
Available on Firefox for Android™Available on Firefox for Android™
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Extension Metadata
About this extension
Check Your Friend shows your friends whether you are studying, taking a break or busy — automatically, based on what you are doing on your computer. This extension lets the Check Your Friend desktop app tell websites apart (YouTube ≠ your learning platform).
What it does
- Reads the address of the active tab and reduces it to the domain (
- Sends that domain only to the Check Your Friend desktop app on the same computer (Native Messaging)
What it never does
- No page titles, paths, query parameters or page contents
- No content scripts, no access to websites, no network requests
- Never in private windows; local and intranet addresses are ignored
You can switch it off or exclude single sites in the popup.
Requires the free Check Your Friend desktop app: https://www.checkyourfriend.app/download
What it does
- Reads the address of the active tab and reduces it to the domain (
www.youtube.com/watch?v=… → youtube.com)- Sends that domain only to the Check Your Friend desktop app on the same computer (Native Messaging)
What it never does
- No page titles, paths, query parameters or page contents
- No content scripts, no access to websites, no network requests
- Never in private windows; local and intranet addresses are ignored
You can switch it off or exclude single sites in the popup.
Requires the free Check Your Friend desktop app: https://www.checkyourfriend.app/download
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Permissions and data
Required permissions:
- Exchange messages with programs other than Firefox
- Access browser tabs
Required data collection, according to the developer:
- Website activity
More information
- Add-on Links
- Version
- 0.1.0
- Size
- 86.32 KB
- Last updated
- 4 days ago (Sep 29, 2026)
- Related Categories
- License
- All Rights Reserved
- Version History
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