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Quad9 Connect vs personalDNSfilter: catalog facts
Quad9 Connect	personalDNSfilter
Free Free and open source; the Quad9 DNS service is also free.	Free Free to download.
Android	Windows, macOS, Linux, Android
Official app from Quad9 Works on Android and ChromeOS	Works on Android with or without the VPN slot Supports DNS over HTTPS and DNS over TLS
Tied to the Quad9 DNS service No iOS or desktop version	Desktop use needs Java Filters by domain only, not page content
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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