Name: Cat Gatekeeper
Rating: 4.63 (690 reviews)
Author: ZOKUZOKU

Jun 11, 2026

description

★Important Notice★

The official versions of Cat Gatekeeper are only those linked from this page and the official website.
Please be careful of apps or websites with similar names.

The source code is available here:
https://github.com/zokuzoku/cat-gatekeeper

Note: Cat videos, images, icons, and other visual assets are not covered by the MIT License.
Unauthorized use or redistribution is not permitted.

★ News & Updates ★

・Changed the default time setting from 30 minutes to 10 minutes!
（If your idle time changed after the update, please set your preferred time once and save it to keep it in future updates.）
・The desktop app is now available!
・Added support for the Brave browser!
・A new cat now appears at random!
・You can now add any target sites you like!

※ On sites with frequent page changes or reloads, tracking may reset more easily.
We recommend using this on social media, video sites, or other services where you stay on the same site for a while.
※ If the display or behavior becomes unstable after updating, please reload the open page once.

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Social media is just too hard to stop checking, isn't it? 💦🥵
What you need isn't more willpower — it's a cat that forces its way onto your screen!!

You know that cat who always shows up right when you're trying to work? 🐈️
We've recreated that classic cat-owner experience in your browser.

Oh well, they're too cute to stay mad at.
Let's face it — humans are just servants to their cats.
We are powerless against their charm.
The supreme beings. The ultimate fluffballs.
Let their adorableness heal you while you take a proper break.

■ Who this is for
* The scrolling won't stop
* You suddenly realize an hour has passed
* Willpower alone just isn't cutting it

■ How to use
1. In the top-right corner of your browser, next to the address bar,
click the extensions icon and select Cat Gatekeeper to open the menu.
2. Set your usage limit (default: 10 min)
3. Set your break time (default: 5 min)
4. Set your favorite sites (default: major social media sites)
5. When time's up, a cat appears
6. Rest until the countdown ends

■ How it works
* Only counts time when a target site tab is active
* Tracking resets when you switch to another tab or app
* After your break, the usage timer starts again

■ Supported Sites
The default settings include major social media sites.
You can add, remove, or change target sites from the menu.
Note: Tracking may reset on sites with frequent page changes or reloads, so Cat Gatekeeper works best on social media and video sites where you stay on the same service for a while.

* Page access permission is used solely to display the break overlay (cat overlay).
* No data is collected or transmitted externally.
* Free, no ads

Get the desktop app for use beyond the browser
https://zokuzoku.github.io/cat-gatekeeper/desktop/

★Important Notice★

The official versions of Cat Gatekeeper are only those linked from this page and the official website.
Please be careful of apps or websites with similar names.

The source code is available here:
https://github.com/zokuzoku/cat-gatekeeper

Note: Cat videos, images, icons, and other visual assets are not covered by the MIT License.
Unauthorized use or redistribution is not permitted.

★ News & Updates ★

・Updated the target domain for X from twitter.com to x.com!
・Fixed settings changes so they are also applied to already open tabs!
・Changed the default time setting from 30 minutes to 10 minutes!
（If your idle time changed after the update, please set your preferred time once and save it to keep it in future updates.）
・The desktop app is now available!
・Added support for the Brave browser!
・A new cat now appears at random!
・You can now add any target sites you like!