one sec | Website Blocker, Focus, Screen Time

Name: one sec | Website Blocker, Focus, Screen Time
Rating: 4.8288 (146 reviews)
Author: riedel.wtf GmbH

“one sec” forces you to take a deep breath and pause whenever you open one of the configured websites (Reddit, YouTube, Twitter, …).

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Features & Capabilities

one sec is a privacy-focused Chrome extension designed to help you regain control over your digital habits by forcing a mindful pause whenever you open distracting websites such as Reddit, YouTube, or Twitter. Unlike traditional blockers, it tackles unconscious social media use by prompting you to take a deep breath, promoting awareness and reducing time spent on these platforms.

By interrupting habitual scrolling with a simple, effective pause, one sec encourages long-term changes to your focus habits. It protects your privacy with zero tracking, no accounts, and offline data storage—ensuring your information stays secure. Available also for Firefox, iPhone, iPad, and Android, one sec provides a comprehensive solution to manage screen time and cultivate mindfulness online.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.3.2 Last updated: 2026-02-28

Version code:

6164565

Creation date:

2022-10-14

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

5.58MB

Email:

su*****@one-sec.app

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-23

Compare stats and ranking:

Ranking

# 2,040 ▼ 16

Other rankings

#336 in Other extensions ▼ 4

#3 in screen time tracker keyword 10

#13 in focus keyword 32

#17 in website blocker keyword 64

#18 in screen time keyword 18 ▼ 1

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Other platforms

one sec | Website Blocker, Screen Time, Digital Detox, ADHD, Block Websites (v1.3.0)

30,000 4.88

(1,122)

one sec | app blocker, focus (v2.6.17)

1,844,732 4.69

(43,392)

one sec | Website Blocker & Focus Companion (v1.3.0)

3,888 4.90

(55)

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:

riedel.wtf GmbH

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/one-sec/

Email:

su*****@one-sec.app

Website:

https://one-sec.app/support

Permission Change History

2025-03-07: Version 1.0.1 → 1.1.3

Add Host permissions: <all_urls>

Remove Permissions: history <all_urls>

2024-04-15: Version 0.4 → 1.0.0

Add Permissions: history

2023-02-16: Version 0.2 → 0.3

Add Permissions: alarms

User Reviews

Reviewers repeatedly cite one sec as an effective tool for cutting time on distractions, especially YouTube, and appreciate its cross-device usability (phone and computer) and ability to pair with LeechBlock. The blocking mechanism with a pause-and-breathe flow and its clean, intuitive UI are praised for a calm focus aid without slowing browsing. The main caveat across multiple reviews is cost: many features are paid, with some users suggesting free alternatives or desiring more customization.

Pros

Highly effective at reducing time spent on distractions (notably YouTube), helping users reclaim their time.
Works across devices (phone and computer) and can be used with LeechBlock for stronger blocking.
Smooth, non-intrusive performance that doesn’t slow down pages or interfere with browsing.
Elegant UI with a pause-and-breathe blocking approach.
Intuitive and easy to use.

Cons

Paid features and overall cost may deter some users; several reviews compare it unfavorably to free or cheaper options like LeechBlock.

Recent reviews

love the app for my phone, been using it for years now. only installed the desktop version now, but haven´t run into any issues yet. great stuff.

by Ni*****, 2026-06-17

by Ry*****, 2026-06-10

Really powerful nudge - delivered right in moment - The best focus-friendly extension

by Fi*****, 2026-06-08

View all user reviews ›

Is one sec | Website Blocker, Focus, Screen Time 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.

one sec | Website Blocker, Focus, Screen Time 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.
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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.

one sec | Website Blocker, Focus, Screen Time 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.
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