The best BlockSite alternative
A free, privacy-first website blocker for Chrome and Firefox. The mass-market site and app blocker, with the category’s biggest install base.
Free forever. No account required to start. Pro adds keyword blocking and full insights.
Why people leave BlockSite
- You hit the 3-site free limit almost immediately
- You don’t want to pay just to schedule blocks
- You’d rather not have your browsing data collected
- The constant upgrade prompts wore you down
SiteBlocker in one line
SiteBlocker doesn’t hold its core features hostage. Custom blocklists, scheduling, whitelist mode, Focus Mode with a Pomodoro timer, and cross-device sync are all free, with zero data collection. Pro ($2.99/mo, $24.99/yr, or $49.99 lifetime) adds keyword blocking and the full Insights dashboard.
SiteBlocker vs BlockSite
| Feature | SiteBlocker | BlockSite |
|---|---|---|
| Price | Free; Pro from $2.99/mo | Free (3 sites) / ~$39.99 lifetime |
| Free blocked-site limit | Unlimited | 3 sites |
| Scheduled blocking | Free | Paid |
| Whitelist mode | Free | Paid |
| Focus Mode + Pomodoro | Free | Limited |
| Keyword blocking | Pro | Paid |
| Cross-device sync | Free | Paid |
| Data collection | None | Collects user data |
| Browsers | Chrome, Firefox | Chrome, Edge, Firefox |
| Mobile apps | No | iOS, Android |
Where BlockSite is strong
- + The easiest onboarding in the category and the largest, most-tested user base
- + Keyword and category blocking, plus a genuine mobile and parental-control story
- + Custom block pages and redirects
Where it falls short
- – The free tier caps you at 3 sites, barely enough for one bad habit
- – A password doesn’t stop someone uninstalling the extension, so the lock is easy to bypass
- – Whitelist (allow-only) mode is awkward to set up, and pricing is opaque and sale-driven
Choose SiteBlocker if…
You want every blocking feature free with no site cap, you care about privacy, and you live in Chrome or Firefox.
Stick with BlockSite if…
You need to block apps on iOS or Android, or want parental controls across phones and tablets.
How to switch from BlockSite
- 1
Install SiteBlocker from the Chrome Web Store or Firefox Add-ons and (optionally) create a free account for cross-device sync.
- 2
Open your BlockSite block list, copy the sites you block, and add them to a SiteBlocker blocklist. Set up any schedules or a whitelist while you’re there.
- 3
Once everything works, remove BlockSite. The whole move takes about five minutes.
SiteBlocker vs BlockSite: FAQ
Is SiteBlocker a free alternative to BlockSite?
Yes. SiteBlocker’s blocking is completely free with no site limit, where BlockSite caps free users at 3 blocked sites. SiteBlocker’s optional Pro tier ($2.99/mo, $24.99/yr, or $49.99 lifetime) adds keyword blocking and a full insights dashboard, but every core blocking feature stays free.
How is SiteBlocker different from BlockSite?
SiteBlocker gives away scheduling, whitelist mode, Focus Mode, and cross-device sync for free and collects zero data. BlockSite paywalls those features and collects user data. BlockSite’s advantage is mobile apps for iOS and Android, which SiteBlocker does not offer.
Does SiteBlocker have a 3-site limit like BlockSite?
No. SiteBlocker lets you block an unlimited number of sites across unlimited blocklists for free. There is no cap on the free tier.
How do I switch from BlockSite to SiteBlocker?
Install SiteBlocker from the Chrome Web Store or Firefox Add-ons, copy the sites you block in BlockSite into a SiteBlocker blocklist, set up any schedules, then uninstall BlockSite. It takes about five minutes.
Last updated June 05, 2026
Competitor pricing and features are verified periodically and can change. Sources:
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