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Rethink DNS vs BlockAds: catalog facts
Rethink DNS	BlockAds
Free Free and open source under the Apache licence. Optional paid resolver plans exist.	Free Free and open source under the GPL-3.0 licence, funded by sponsorships.
Android	Android
Firewall, encrypted DNS and blocklists in one app with detailed logs Supports WireGuard alongside its own filtering	Works without root through a local VPN Optional root mode using iptables
Uses the VPN slot, though it can proxy a WireGuard tunnel through itself The amount of configuration is daunting at first	Local VPN mode occupies the Android VPN slot HTTPS filtering is still in beta
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
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 September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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