AppBlock vs BlockSite
Both block websites in Chrome and apps on your phone. This page compares their Chrome extensions, using what each one states on its own store listing.
Last verified: . Facts come from the Chrome Web Store listings for AppBlock (version 1.8.0) and BlockSite (version 7.1.1). We make Site Blocker, shown in the third column.
Quick verdict
Choose BlockSite if you want the most features in Chrome: password protection, usage limits, redirects and insights. Choose AppBlock if you mainly need to block apps on your phone and want a matching Chrome extension with schedules. If you only need Chrome and would rather not share browsing data, a free extension such as Site Blocker or LeechBlock NG covers it.
AppBlock vs BlockSite, feature by feature
| Feature | AppBlock | BlockSite | Site Blocker |
|---|---|---|---|
| Chrome users | 60,000 | 1,000,000 | 3,000 |
| Store rating | 4.7 (870 ratings) | 4.5 (32.4K ratings) | 5.0 (1 rating) |
| Price | Free to install | Free to install; paid plans on blocksite.co | Free, all features |
| Data disclosed on Chrome Web Store | Personally identifiable information, user activity | Web history | None collected |
| Chrome permissions | 6, plus access to all sites | 12, plus access to all sites | 5, plus access to all sites |
| Keyword blocking | Yes (URL or page text) | Yes | Yes |
| Regex rules | Not advertised | Not advertised | Yes |
| URL redirects | Not advertised | Yes | Yes |
| Schedules | Yes | Yes | No |
| Time limits | Not advertised | Yes (Usage Limit) | No |
| Password or lock | Not advertised | Password, uninstall prevention | No |
| Focus timer | Timer Quick Block | Pomodoro Focus Mode | Focus Mode (all sites except your list, 15–120 min) |
| Usage statistics | Not advertised | Yes (Insights) | Yes, built on your device |
| Mobile | iOS and Android | iOS and Android | No |
| Last updated | March 2025 | July 2026 | April 2026 |
"Not advertised" means the store listing does not mention the feature.
Size and upkeep
BlockSite has 1,000,000 Chrome users and a 4.5 rating from 32.4K ratings; its extension was last updated in July 2026. AppBlock has 60,000 Chrome users and a 4.7 rating from 870 ratings; its extension was last updated in March 2025. AppBlock is also available for iOS and Android, where it blocks whole apps as well as websites.
Blocking features
Both block sites and keywords and both have schedules by day and time. AppBlock's keyword blocking looks at the URL or the text of the page, and it has a Quick Block timer for temporary blocks. BlockSite's listing goes further, with usage limits, password protection, uninstall prevention, redirects to another site, a Pomodoro Focus Mode and usage insights.
Privacy and permissions
AppBlock's listing discloses that it handles personally identifiable information and user activity, and its manifest requests 6 permissions plus access to all sites. BlockSite's listing discloses web history, and its manifest requests 12 permissions plus access to all sites. Both declare that the data is not sold to third parties.
A third option: free and no data collected
If you only need blocking in Chrome, Site Blocker is free with every feature included, has no account, and its listing discloses no data collection. It adds regex rules, redirects and a whitelist-only Focus Mode. It has no schedules, time limits, password or mobile app, so it is not a replacement if you need those. See all the options on the BlockSite alternatives page.
Frequently asked questions
What is the difference between AppBlock and BlockSite?
On Chrome, BlockSite is the larger and more fully featured of the two: 1,000,000 users against AppBlock's 60,000, and its listing adds password protection, usage limits, uninstall prevention, redirects and insights. AppBlock's Chrome extension covers the core: site and keyword blocking, schedules and a Quick Block timer. Both have iOS and Android apps.
Which is better, AppBlock or BlockSite?
For desktop Chrome, BlockSite lists more features and was updated more recently (July 2026, against March 2025 for AppBlock's extension). AppBlock is the better fit if your main problem is phone apps and you want the desktop extension as a companion.
What data do AppBlock and BlockSite collect?
As of October 12, 2026, AppBlock's Chrome Web Store listing discloses that it handles personally identifiable information and user activity. BlockSite's listing discloses that it handles web history. Both declare the data is not sold to third parties.
Is there a free alternative to both?
Yes. Site Blocker and LeechBlock NG are both free Chrome extensions whose listings state the developer does not collect or use your data. Neither has a mobile app.