ShizuWall provides an Android 11 and later firewall solution that does not use a VPN connection.
Open source
18 alternativesRethink App
Rethink is an Android client for DNS over HTTPS, DNS over Tor, and DNSCrypt, with a WireGuard proxifier, firewall, and connection tracker.
About Rethink App
Rethink App is an open-source Android privacy and security tool that functions as a client for DNS over HTTPS, DNS over Tor, DNSCrypt, and Oblivious DoH, alongside a WireGuard proxifier, firewall, and network connection tracker. It supports split-tunnel configurations for routing different apps through separate VPN or proxy tunnels, per-app firewall rules based on app state, connection type, or custom denylists, and per-app network monitoring. The app defaults to a free public DoH resolver with built-in malware and ad-blocking, deployed globally via Cloudflare Workers, and allows users to configure custom DNS resolvers with denylist and allowlist support, a feature planned for launch in late 2026.
Key features
- Supports DNS over HTTPS, DNS over Tor, DNSCrypt, and Oblivious DoH
- Multi-hop WireGuard proxifier with split-tunnel per-app routing
- Per-app firewall rules based on app state, connection type, or denylists
- Per-app network monitoring for UDP, TCP, and DNS traffic
- Custom DNS resolver configuration with denylist and allowlist support
- Free public malware and ad-blocking DoH resolver with global deployment
Best for: Android users seeking granular control over DNS traffic, app network permissions, and multi-tunnel VPN routing for enhanced privacy.
Good for
- Open-source codebase available for public review
- Combines DNS client, VPN proxifier, firewall, and network monitor in one app
- Includes a free, globally deployed public DoH resolver with malware and ad blocking
Watch out for
- Per-app connection tracking on Android 11 and below uses a heuristic that may be inaccurate
- Custom DNS resolver configuration feature is not yet released, with a planned 2026 launch
- Only available for Android devices
Rethink App at a glance
- Category
- Privacy & Security › Mobile Privacy
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Rethink App FAQ
What DNS protocols does Rethink App support?
It supports DNS over HTTPS, DNS over Tor, DNSCrypt, and Oblivious DNS over HTTPS.
Can different apps be routed through separate VPN tunnels?
Yes, split-tunneling supports routing apps through separate WireGuard, SOCKS5, or HTTP CONNECT tunnels.
Is a free public DNS resolver available for use with the app?
Yes, the default resolver is a free public DoH endpoint with malware and ad-blocking, deployed to over 300 global locations.
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