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Focus vs LeechBlock NG: catalog facts
Focus	LeechBlock NG
Paid Paid app with a free trial download.	Free Free to install and use.
macOS	Browser extension
Blocks both websites and applications Pomodoro timers, schedules and profiles	Up to 30 block sets, each with its own schedule Blocks by fixed time period, time allowance or both
macOS only Paid after the trial	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
Downloadable app	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
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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