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LeechBlock NG vs Freedom: catalog facts
LeechBlock NG	Freedom
Free Free to install and use.	Paid Paid subscription with a free trial.
Browser extension	Windows, macOS, Android, iOS, Browser extension
Up to 30 block sets, each with its own schedule Blocks by fixed time period, time allowance or both	Blocks sync across desktop, phone and Chrome Scheduled and recurring focus sessions
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	Paid after the trial Requires an account to sync devices
Browser extension	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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