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Last updated on: 2026-06-14
Android Apps > Tools > Rethink: DNS + Firewall + VPN
Rethink: DNS + Firewall + VPN icon

Rethink: DNS + Firewall + VPN

v0.5.5e
Celzero
4.09
3,106 reviews
500,000+
Downloads
Free

Firewall apps, use WireGuard VPN, monitor network, block malware, change DNS.

Not recently updated — last update was on 2024-04-06. This app may no longer be actively maintained.
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Pros & Cons

  • WireGuard-based VPN for fast, secure outbound connections
  • Open source with no trackers
  • Comprehensive per-app monitoring and firewall controls
  • DNS protection across 300+ global locations
  • Not ranked in any top lists, limiting visibility in rankings
  • Marketing text is highly technical and may be less approachable for casual users

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Rethink: DNS + Firewall + VPN compared with similar apps

Keywords missing from this app

Security Privacy Access Root Protection Online Device Free Usage Proxy Features Control Protect Blocker Ai Speed Connect Ads Private Internetguard Bear Service Unlimited Wi Fi Cyber Changer Experience

About Rethink: DNS + Firewall + VPN

Rethink: DNS + Firewall + VPN is a tools app developed by Celzero.

Download Statistics

Rethink: DNS + Firewall + VPN has been downloaded 960 thousand times. In the last 30 days, the app was downloaded 31 thousand times.

User Ratings

Rethink: DNS + Firewall + VPN is rated 4.09 out of 5 stars. The rating is based on 3.1 thousand ratings.

App Information

Rethink: DNS + Firewall + VPN is FREE to download. The APK download size is 60.52 MB. The latest version available is v0.5.5e. The last update was on April 6, 2024.

Technical Requirements

Rethink: DNS + Firewall + VPN requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2021.

Description
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.

Recent changes:
New feature: Optionally proxy DNS over WireGuard and SOCKS5 proxies.
New feature: Optionally enable built-in Android connectivity checks.
New feature: List domains and websites an app has connected to.
Improved support for editing IP-based firewall rules.
Improved WireGuard bandwidth.
Overhauled WireGuard UX.
Avoid connection leaks for Simple and Always-on WireGuard modes.
Bug fix: Support multiple rules for a single Trusted IP.
Bug fix: Android 14 specific crash.
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More data about Rethink: DNS + Firewall + VPN

Price Free to download
Total downloads 960 thousand
Recent downloads 31 thousand
Rating 4.09 based on 3.1 thousand ratings
Ranking Not ranked
Version v0.5.5e
APK size 60.5 MB
Number of libraries 37
Designed for Android 6.0+
Suitable for Everyone
Ads NO ads

App Performance Report

Get a detailed PDF report for Rethink: DNS + Firewall + VPN with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Google Play Rating history and histogram

2.1K
180
240
220
370

Downloads over time

Rethink: DNS + Firewall + VPN has been downloaded 960 thousand times. Over the past 30 days, it averaged 1 thousand downloads per day.

Changelog of Rethink: DNS + Firewall + VPN

Show changelog

Developer information for Celzero

Celzero

hello@celzero.com

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Comments on Rethink: DNS + Firewall + VPN for Android

★★★★☆ Ainz Ooal Gown · Jan 28, 2026
I tried net guard, dns net, athena. Out of these rethink dns impressed the most. Why? Because it could be used with mullvad simultaneously. If it had 1 weakness, I checked GitHub seems lots of issues remain unresolved? Dev seems to be swamped with to-do list. But as long as it's fixed it has very good potential. This is a very important app to have. Fyi, the google play app is outdated vs GitHub, so i reco install from the GitHub instead. I donno y the dev have different version from GitHub
★★★★★ Pimmy Gee · Feb 22, 2026
I'm so happy to have found this app. I love the ability to easily combine encrypted DNS filtering with a firewall on Android (and even run a VPN simultaneously!), which I hadn't found elsewhere. I've happily donated as well because this deserves it. Hopefully this can make privacy more accessible to all.
★★★★☆ Daniel Josh Mijares (Josh) · Nov 19, 2025
So far, good impression in first install. I will further test it. It looks good for a free open source app. Minus one star for bug, and no option to add other sources. Please add feature where we can see which is blocking something, so we can easily adjust our list. They removed the advertised VPN, so it's now only DNS and Firewall.
★★★★★ Someone Somewhere · Mar 13, 2026
It is the single best app I have used in 2026, can you pls add one more sometimes feature I download content from here and there and this app game native sometimes game hub, I have to give access to them for storage, now with you app I can see. Where it is making all requests, but I want to block any request or say upload it makes to a place for example china, can you add that if it is possible, any answer is fine.
★☆☆☆☆ M A · Feb 16, 2026
It worked great for a couple of weeks and then it stopped working. It fails to connect and says "no internet." I waited weeks and the issue did not resolve, so I will be uninstalling. Rebooting my phone or trying a different Wi-Fi connection did not help.
★☆☆☆☆ M. La Buse · May 20, 2026
doesn't work, I hit apply after selecting dns block lists but nothing happens. What is rdns plus? A subscription?
★★☆☆☆ Shailesh Rathod · Feb 28, 2026
Bad experience no internet connection problem aati he jabs bhi rethink connected hota he to no internet connection problem aati he. Internet bhi nahi Chalía

Google Play Rankings for Rethink: DNS + Firewall + VPN

This app is not ranked

Technologies used by Rethink: DNS + Firewall + VPN

Rethink: DNS + Firewall + VPN is requesting 17 permissions and is using 37 libraries.
Show details
Firewall - DNS & Anti Spy icon Firewall - DNS & Anti Spy
Ava VPN - Safer & Faster VPN icon Ava VPN - Safer & Faster VPN
DNS Firewall by KeepSolid icon DNS Firewall by KeepSolid
DNS Firewall icon DNS Firewall
Firewall Security AI - No Root icon Firewall Security AI - No Root
DataGuard No Root Firewall, In icon DataGuard No Root Firewall, In
DNS Changer - Better Internet icon DNS Changer - Better Internet
InternetGuard No Root Firewall icon InternetGuard No Root Firewall

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