Firewall apps, use WireGuard VPN, monitor network, block malware, change DNS.
About this app
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.
Licensed under Apache-2.0, by The RethinkDNS Authors.
What's New in vv0.5.5y
Imported from the F-Droid repository index.
Version history
Jul 10, 2026 · 31.3 MB · Android API 23–35 · code 639
Imported from the F-Droid repository index.
SHA-256 6cad7027c5c4cf1ff9ee402c281d27bdc815b6a5b7016f28d14bb3ef51423e9d
Jul 10, 2026 · 29.5 MB · Android API 23–35 · code 638
Imported from the F-Droid repository index.
SHA-256 04f98a1230bf1d34163f4b335c516e70859a93ef68369da8ec56d2dfed875fab
Jul 10, 2026 · 30 MB · Android API 23–35 · code 633
Imported from the F-Droid repository index.
SHA-256 09669c94bc6528b83439ff3abb1147d88f87ebab99a47478ce9960ec43a7810a
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.celzero.bravedns is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, v0.5.5y is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Rethink: DNS + Firewall + VPN first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Rethink: DNS + Firewall + VPN, and a listing is removed when the evidence for it stops holding up.
Get Rethink: DNS + Firewall + VPN
Every source we list for com.celzero.bravedns is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
6cad7027c5c4cf1ff9ee402c281d27bdc815b6a5b7016f28d14bb3ef51423e9d
Signing certificate
abc6766ba34e027dc7dfa29b1c2b5b1d1dc14f7ba637895a81dfb68e40bc1579
Permissions Required
What each permission lets Rethink: DNS + Firewall + VPN do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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