Compare software

BlockSiteSelfControl
Freemium

Free to start; BlockSite Premium is a paid subscription with a 30-day guarantee.

 Free

Free and open source, supported by donations.

Android, iOS, Browser extension macOS
  • Blocks both websites and apps
  • Focus Mode for timed work sessions
  • Block cannot be undone until the timer expires
  • Survives restarts and deleting the app
  • Some features require a paid Premium subscription
  • Closed-source commercial product
  • macOS only
  • No way to end a block early if you set it wrongly
Downloadable app, Browser extension Downloadable app
Closed source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.