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DNS Shield

Encrypted DNS, firewall and ad-blocking in one.
Open SourceAd-FreeNo TrackingApache-2.0

About DNS Shield

DNS Shield combines encrypted DNS, a per-app firewall and network monitoring into one open-source app — no root needed.

Choose your own DNS resolver, block ad and tracker domains, and see exactly which apps are connecting where.

Features

Encrypted DNS

DNS-over-HTTPS, DNS-over-TLS, DNSCrypt and ODoH.

Blocklists

Stop ads, trackers and malware domains.

Per-app firewall

Rules by network, screen state and more.

Split tunnelling

WireGuard support to route chosen apps.

Live monitor

Per-app connection and query logs.

Open & ad-free

Apache-2.0 licensed.

Open source & credits

DNS Shield is built by PiTech from the open-source project Rethink DNS + Firewall by celzero, released under the Apache-2.0 license. We are grateful to the original authors and the open-source community.

Original source: https://github.com/celzero/rethink-app
PiTech maintains this app in the spirit of the Apache-2.0 license and publishes its modifications on our GitHub.