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Rethink DNS vs Acutis Firewall: catalog facts
Rethink DNS	Acutis Firewall
Free Free and open source under the Apache licence. Optional paid resolver plans exist.	Free Free and open source, listed on F-Droid under the MIT licence.
Android	Android
Firewall, encrypted DNS and blocklists in one app with detailed logs Supports WireGuard alongside its own filtering	Filtering runs locally on the device Blocks adult, malware and dangerous domains
Uses the VPN slot, though it can proxy a WireGuard tunnel through itself The amount of configuration is daunting at first	Small, young project Uses the Android VPN slot, so it cannot run alongside another VPN
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
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 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.