One Sec is a browser extension designed to help you manage your time online by introducing a brief pause before accessing distracting websites. | AdGuard Adblocker is a browser extension with over 14 million users, designed to block ads, enhance privacy, and protect against online threats. Read our detailed review to see how it performs. | |
Key Features A summary of the most important features offered by each extension. |
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Our Rating Tooltivity's expert review score for each extension, based on hands-on testing and research. | 8.9 | 9.0 Winner in this category |
Total users Total active users across all major browsers: Chrome, Edge, Firefox, and Safari. | 25,103 | 27,246,436 Winner in this category |
Total ratings Total number of user ratings received across all supported browsers. | 988 | 77,946 Winner in this category |
Average rating Average user rating across all browsers, calculated from available store ratings. | 4.8 ⭐ Winner in this category | 4.3 ⭐ |
Entry Level Price The minimum price required to start using the extension. "Free" means a free tier is available. | Free | Free |
Chrome User rating and stats for the extension on Chrome browser. | ![]() 4.9 4.83 Average Chrome Web Store rating from the last 100 reviews 20.0K+Users Winner in this category | ![]() 4.7 4.07 Average Chrome Web Store rating from the last 100 reviews 14.0M+Users |
Edge User rating and stats for the extension on Edge browser. | ![]() 4.9 4.86 Average Microsoft Edge Store rating from the last 100 reviews 3.6K+Users Winner in this category | ![]() 4.8 4.20 Average Microsoft Edge Store rating from the last 100 reviews 11.8M+Users |
Firefox User rating and stats for the extension on Firefox browser. | ![]() 4.8 4.74 Average Mozilla Firefox Add-ons Store rating from the last 100 reviews 1.5K+Users Winner in this category | ![]() 4.7 4.42 Average Mozilla Firefox Add-ons Store rating from the last 100 reviews 1.4M+Users |
Safari User rating and stats for the extension on Safari browser. | - | - |
Features Tooltivity's expert score for the 'Features' aspect of each extension. | 7.5 The core function that One Sec uses to make users more productive is a pause before opening the website. When I open websites I have defined, such as Twitter, a gray page with a countdown appears. During this period, I was reminded that I didn't want to spend so much time on Twitter and asked myself whether this was intentional or just a reflex out of boredom.
| 9.3 Ad Blocker:In our tests, ad banners and ad videos were blocked on all websites, including YouTube and Twitch. Blocked ads also include social media widgets and pop-ups, among other things. ![]() Privacy and Malware Protection:The extension blocks tracking by blocking third-party trackers on all websites and protects your personal data. It also detects and blocks malicious websites and spyware. ![]() CustomizableAdGuard Adblocker offers the option of activating or deactivating all functions yourself. Winner in this category |
Performance Tooltivity's expert score for the 'Performance' aspect of each extension. | 9.5 In our test, we did not notice any delays or slowdowns due to the extension. Winner in this category | 9.0 A recent user complained in a review that it had YouTube problems that affected the performance and speed of the website. In our test, we did not notice any performance problems. The extension generally works quickly and reliably. There are also regular updates, so the problem may already have been solved. |
Design Tooltivity's expert score for the 'Design' aspect of each extension. | 8.0 The user interface is clean and minimalist, and this also applies to the setup and settings. The extension offers an effective use of visual elements for taking a break by displaying a preset screen with a countdown. There would be potential for improvement here if the screen could be customized. | 9.2 The design is very clear and well-organized. The display of the settings is significant for adblockers. Here, great importance has been attached to user-friendliness and highlighting the customizable settings. Winner in this category |
Value for Money Tooltivity's expert score for the 'Value for Money' aspect of each extension. | 9.2 The browser extension is completely free of charge. However, you only get a small number of functions. For anyone who only needs the basic function, this is unbeatable value for money. OneSec also offers an app with additional functions. At $4.99/month or $49.99/year, it also has a good price-performance ratio. Winner in this category | 9.2 The free browser extension offers numerous functions that worked perfectly in the test. Compared to competitors, you get many functions here that others offer for a fee. Winner in this category |
Ease of Use Tooltivity's expert score for the 'Ease of Use' aspect of each extension. | 9.5 The installation process was quick and straightforward. This also includes the setup, which is very intuitive with clear step-by-step instructions. Everything is also well explained in the settings menu afterward, so everyone should be able to find their way around. ![]() Winner in this category | 9.5 Installation is quick and easy. What impressed us in comparison to other competitors was that AdGuard Adblocker clearly shows which functions it offers and explains them in the introduction, and you can activate them directly if you wish. The extension therefore attaches great importance to ensuring that every user recognizes and uses the options. With competitors, some functions were somewhat hidden in the settings. ![]() Winner in this category |
Security & Privacy Tooltivity's expert score for the 'Security & Privacy' aspect of each extension. | 9.5 Data usage is described transparently in the privacy policy, which places great value on user privacy. Winner in this category | 8.0 Strong privacy protection by preventing tracking. Also features malware detection and blocking, although public complaints could raise concerns. |
Conclusion A summary of our findings and final thoughts for each extension. | One Sec is a tool that encourages mindful browsing by introducing a pause every time you want to access a distracting website. | AdGuard Adblocker is, in our opinion, a very good ad-blocking tool compared to its competitors, offering a range of features in the free extension that you often have to pay for. In our test, all ads were blocked. Other ad blockers currently fail because of YouTube's advertising videos, but AdGuard currently seems to have this fully under control. Overall, it is the choice for a free browser extension with many features. Finally, we would like to point out that our test is about the browser extension. If you work in different browsers and don't want to install a new extension in each one, or if you work a lot in apps that carry out advertising and tracking, AdGuard Adblocker offers an app for comprehensive security outside the browser. The AdGuard app allows you to block advertising in other apps outside of your web browser, for example, and keep your data secure. Here is an overview of the additional functions: ![]() Currently, you have the opportunity to purchase the app as a lifetime plan. Here you can decide whether the app should be installed on 3 or 9 devices. ![]() |
Our Recommendation | In our comparison between one sec and AdGuard AdBlocker, AdGuard AdBlocker came out on top, scoring 9. AdGuard AdBlocker is the most widely used, with over 27 million users and 78k+ reviews—and it also delivered the strongest performance in our tests. User reviews reflect our findings. Notably, one sec has the highest user rating in the Chrome Web Store at 4.84, which supports its strong performance in our review. In the end, the differences between these extensions are minimal, so your choice may come down to personal preference or specific features.
If you want a quick recommendation, AdGuard AdBlocker is our top pick. But as always, the best choice depends on what matters most to you. |