ScreenZen Blocker

Name: ScreenZen Blocker
Rating: 4.5 (8 reviews)
Author: ScreenZen

By: ScreenZen Add-on

*** ScreenZen macOS App Required *** Blocks websites as per ScreenZen configurations.

Overview

Firefox Add-ons Store

Daily users

935 ▼ 2

Data as of 2026-08-02

Rating:

4.50

(8)

Version:

1.8

Last updated: 2025-08-26

Features & Capabilities

ScreenZen macOS App Required

ScreenZen Blocker is a Firefox companion extension that works only with the ScreenZen macOS application. You must download and set up the ScreenZen app from the macOS App Store before installing this extension — it cannot be used independently.

Once paired with the macOS app, ScreenZen Blocker enforces the website blocking rules defined in your ScreenZen configuration directly in Firefox. This extension brings consistent site blocking across the browser by syncing settings from the macOS app, making it ideal for focus, productivity, parental controls, or managed environments.

User Growth & Download Statistics

Add-on Privacy & Security

By:

Daily users:

Rating:

Version:

1.8 Last updated: 2025-08-26

Version code:

6020918

Creation date:

2025-01-28

Risk:

Permissions:

Size:

436.75KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-02

Compare stats and ranking:

Ranking

# 3,382 ▼ 11

Other rankings

#36 in screen time keyword 16

#52 in configure keyword 14 ▼ 1

#53 in screensaver keyword 7 ▼ 1

#65 in screen keyword 90 ▼ 1

#79 in ad blocker keyword 95 ▼ 1

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For Developers

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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:

ScreenZen

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/screenzen-blocker/

User Reviews

by Ha*****, 2026-04-02

It's exactly like the regular app... I assume. I can only guess since I can't use the extension due to having an android phone device. That's really only the biggest shortcoming of this extension, that it's exclusively MacOS. Honestly wish I could use this extension for the website blocking :/

by Th*****, 2026-03-05

View all user reviews ›

Is ScreenZen Blocker 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.

ScreenZen Blocker requires some sensitive permissions that could impact your browser and data security. 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 ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
Medium *********** ************* ******* ********** *** ****** ************* ******* *** **** ** ******* **********

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.

ScreenZen Blocker is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******