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AdGuard Browser Extension vs Lockdown Privacy: catalog facts
AdGuard Browser Extension	Lockdown Privacy
Free The browser extension is free to install.	Freemium Free tier available; premium tier unlocks more filtering options.
Browser extension	macOS, iOS
Blocks ads, pop-ups and trackers Cosmetic filtering hides leftover page elements	Blocking happens on-device instead of through a third-party VPN server Open source, so its blocking behavior can be independently verified
Only filters inside the browser, not other apps System-wide filtering requires AdGuard's separate apps	Advanced features require the paid tier Only covers what its firewall rules recognize
Browser extension	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is 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 22, 2026

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