Compare software

StayFocusdLeechBlock NG
Free

The site describes it as always free.

 Free

Free to install and use.

Browser extension Browser extension
  • Daily time limits as well as outright blocking
  • Nuclear Option for a full block over a set period
  • Up to 30 block sets, each with its own schedule
  • Blocks by fixed time period, time allowance or both
  • Built for Chromium browsers such as Chrome and Edge
  • The website uses advertising and analytics cookies
  • Browser extension only, so blocks apply inside supported browsers and not to other apps
  • No Safari version; the site points macOS and iOS users to the separate ivBlock app
Browser extension Browser extension
Closed source Closed source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 23, 2026

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