AdGuard vs Keeper

AdGuard filters ads and trackers locally on your device so it never sees your browsing history, stores only an email address and password hash for account creation, keeps all personal data in its own data center in Frankfurt, names only payment processors as third-party recipients, and commits to emailing users before material policy changes — the main caveats are Cyprus jurisdiction, vague data retention periods, and a main policy that defers heavily to separate per-product privacy notices for the specifics of each platform.

Keeper is a zero-knowledge password manager with SOC 2, ISO 27001, and FedRAMP High certification — among the strongest independent security credentials of any password manager — and it cannot access your vault contents under any circumstances; the main caveats are that it is a US company (Chicago) hosted on AWS subject to US legal process, uses cookies and marketing tracking on its website, retains data for vaguely defined periods, and enterprise account admins can access usage and interaction data for employees on business plans.