Rethink: DNS + Firewall + VPN is an utility tool from Celzero. Firewall apps, use WireGuard VPN, monitor network, block malware, change DNS. It currently holds a 4.0-star rating on Google Play, based on 3,305 user reviews.
App Details
| Developer | Celzero |
|---|---|
| Version | v0.5.5x |
| Size | 72 MB |
| Content Rating | Everyone |
| Installs | 500K+ |
| Rating | 4.0 / 5 (3,305 reviews) |
| Updated | Jun 19, 2026 |
Screenshots
About Rethink: DNS + Firewall + VPN
Say hello to a safer, transparent, and secure Android.
VPN: Connects to multiple WireGuard VPNs of your choice.
Safe: Reveals network activity of installed apps and lets you disable, uninstall, or firewall them.
Secure: First line of defense against spyware, ransomware, and malware that steal personal information and takeover accounts. Protects from DNS manipulation typically employed to censor websites, social media, and messaging apps.
Fast: DNS Servers deployed to 300+ locations world-wide to ensure your internet is as fast and highly available as it can be.
Open: Open source and free of any trackers.
***Features***
Firewall: Prevent apps from connecting to the Internet. Block spyware, malware, ransomware and more.
A firewall blocks any app connecting to the Internet over WiFi or Mobile data. Since most forms of surveillance require the data to be sent the network to a server, firewalling them effectively mitigates the threat (File Managers, Alarm Clock, Calculator are few such examples of apps that do not require any Internet access to function). The firewall feature uses Accessibility Service to detect and firewall background applications.
Monitoring: Keep tabs on incoming and outgoing Internet traffic.
If enabled, the connectivity logs are collected and analyzed. Automated reports flag previously unknown or suspicious connections, and reveal the extent of attempt to steal data by spyware networks. In our tests, around 60% of the traffic is flagged and reported as being initiated by known spyware. Logs generated are made available in near-real time to the user for their own analysis.
WireGuard: Secure outgoing Internet traffic.
The app uses fast, modern, light-weight, and secure WireGuard protocol to encrypt outgoing connections to any compatible VPN provider of your choice.
Anti-censorship:
The app encrypts your internet connection to Domain Name System (DNS) server run by Rethink with presence in our 300+ locations world-wide. DNS servers are the address book of the internet: A DNS server provides the exact addresses you need to visit a website or open an app.
Data Monitor: Track per-app and per-connection Mobile or WiFi data usage.
What makes Rethink: DNS + Firewall + VPN stand out
Rethink: DNS + Firewall + VPN has 500K+ installs to date. That puts it among the more widely adopted apps in its category. Scale at that level usually signals stable performance and a responsive development team. The 4.0-star aggregate is built on 3,305 real user reviews. That sits well above the average for the utility tool genre. Scores like this appear when a product hits its core promise consistently.
Rethink: DNS + Firewall + VPN specifications and compatibility
The current build is version v0.5.5x. The developer last updated it on Jun 19, 2026. The download size is 72 MB. That installs quickly even on a moderate mobile connection. Google Play classifies the content as Everyone.
Frequently asked questions
Is Rethink: DNS + Firewall + VPN free to download?
Yes, Rethink: DNS + Firewall + VPN is available as a free download on Google Play and as a free APK on this page. The APK is the official, unmodified build pulled directly from the developer.
How many people have downloaded Rethink: DNS + Firewall + VPN?
Rethink: DNS + Firewall + VPN has been downloaded 500K+ times from Google Play, putting it among the more widely adopted utility tools in its category.
Is the Rethink: DNS + Firewall + VPN APK safe to install?
Yes. The APK on this page is the original, unmodified build from Celzero, pulled directly from the Google Play Store with no third-party modifications. It carries the Everyone content rating Google assigns on Play.
How big is the Rethink: DNS + Firewall + VPN APK?
The Rethink: DNS + Firewall + VPN APK is 72 MB in size, which downloads quickly on most mobile and Wi-Fi connections.
What is the latest version of Rethink: DNS + Firewall + VPN?
The current build of Rethink: DNS + Firewall + VPN is version v0.5.5x, last updated by the developer on Jun 19, 2026. This page automatically tracks new releases as the developer ships them.
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