Rethink: DNS + Firewall + VPN
Firewall apps, use WireGuard VPN, monitor network, block malware, change DNS.
App info
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App description
Android App Analysis and Review: Rethink: DNS + Firewall + VPN, Developed by Celzero. Listed in Tools Category. Current Version Is v0.5.5e, Updated On 01/11/2025 . According to users reviews on Google Play: Rethink: DNS + Firewall + VPN. Achieved Over 741 thousand Installs. Rethink: DNS + Firewall + VPN Currently Has 3 thousand Reviews, Average Rating 4.2 Stars
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.
We are currently offering version v0.5.5e. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.
We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.
It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.
What's New
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.
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.
Rate and review on Google Play store
Total number of ratings
Total number of active users rated for: Rethink: DNS + Firewall + VPNTotal number of installs (*estimated)
Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.You may also like these apps
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Recent Comments
Ben Leger
This app is LEGENDARY! It helps me save data instead of letting pesky social apps waste all of it. One feature I would like to see added is being able to throttle apps (if in background), times (limit speeds during the night, for example), and networks (limit speed while on metered networks). Other than that, couldn't be a better app to control your data!
C D
Unbelievable capabilities for an app running on a phone, available to the large public and that is also free, FULLY FREE. This might be the №1 top app of all times, especially when it comes to privacy and security. There would be literally no way for someone to rate it less than 4★, unless they have no idea how to use it or they are just trolling.
Tony Arthur
After purchasing a new phone, sadly my go to firewall NoRoot Data Firewall, which I'd used and trusted for years, was not compatible with it. That sent me on a frantic quest for a comparable, free, ad-free alternative. I think I found it with this app. It took a little time to setup and grasp its feature layout but time well spent. 5 days in I'm nothing but impressed with its form and function. Will give an updated assessment as we spend more time together. My compliments to the Devs!
Idriss BENABBES
Great app! However, I think there are two more settings that would make it even more effective, especially for users who use the built-in DNS filter and/or the firewall rules to overcome addiction to some web content or apps. One called "Lock Configuration", which allows users to set a timer or a tedious task (e.g. answering 99 easy questions like: 63-18=?) to discourage them from making unwanted changes later on. And another one called "Prevent App Uninstall" to eliminate their last hope. ;)
Govind Kumawat
STATS BUG: Identical Metered/Unmetered Data on Mobile Only. When connected to Mobile Data ONLY (Wi-Fi OFF), Rethink is incorrectly reporting the total usage in both the "Metered" and "Unmetered (Wi-Fi)" columns. Example: 100MB used on cellular results in 100MB in Metered AND 100MB in Unmetered. The Unmetered column should be 0MB. This bug is a display error, but it is highly confusing. It affects the main profile (and Secure Folder). Please fix the statistics display logic
John Beast
Ok it works but maybe after a year using it on same phone android 14 6gb the dns setting started to stop automatically even I've used system dns or other dns TLS or https blablabla when the phone being used for multiple high speed download the start button on this app became stop and didn't do the dns protection anymore so I need to start it manually again. I think this app need update!
Ed Moran
I didn't have this app very long, but until this morning, it seemed to be perfect. Ever since, the app crashed and stayed down. I can not open it, no matter how many times I'd try. I even uninstalled then re-download it, only to have the problem continue. This is a very big concern, as writing this, my device is completely vulnerable. And it's easy to see that since this started, God only knows what's been getting accessed and what else is happening. NOT HAPPY AT ALL!
NICK
The best privacy firewall on Android! RethinkDNS gives me full control over app internet access — no root needed. With DNS filtering, per-app firewall, and powerful privacy features, I can block trackers, telemetry, and even stop traffic when the phone is locked. As someone who’s privacy-focused, this app is a must-have. Clean UI, open source, no ads — just solid security.