Firewall No Root: App Firewall

cb innovations

In-app purchases

About this app

Firewall No Root is a no-root app firewall for Android (mobile firewall). Decide per app whether internet access is allowed or blocked. Control Wi-Fi and mobile data separately, reduce background connections and keep more of your activity private — with no ads.

You don’t need to root your phone. That means you keep your device in a standard state while still getting a practical way to manage app connections and cut down unnecessary background traffic.

Control internet access per app
• Allow or block connections for each installed app (no root required)
• Separate rules for Wi-Fi and mobile data (use “Wi-Fi only” for heavy apps)
• Reduce background traffic to save mobile data and help improve battery life
• Optional notifications when an app tries to go online for the first time
• Keep kids’ games or learning apps offline when they don’t need internet
• Review apps that connect unusually often and adjust permissions quickly
• Optional: view system apps separately and fine-tune their access
• Advanced: custom rules for IP addresses, host names and domains
• Advanced: regularly updated filter/host lists and an optional DNS changer

Filter lists can help you limit known tracking domains without manually maintaining every address. The DNS changer lets you switch to alternative DNS providers (often more privacy-friendly) and quickly return to your default DNS if something does not work as expected.

Typical examples:
• Travel: block mobile data for update-hungry apps, keep navigation and messaging online
• Home: allow streaming only on Wi-Fi, prevent background usage on mobile data
• Work & focus: keep social apps offline during certain periods
• Family device: decide which apps for children can access the internet
• Privacy habits: keep rarely used apps offline unless you actively open them

The interface stays simple: open the app list, toggle access, done. You can quickly search for an app, set it to “Wi-Fi only”, or keep it offline by default. This makes the firewall useful for beginners and parents, but also flexible enough for power users.

Built for everyday privacy: fewer background connections and clearer control — no scare tactics.

How it works (local filtering via VpnService)
Firewall No Root uses Android’s official VpnService API to filter network traffic locally on your device. The app creates a local connection to itself, routes traffic through the firewall and then decides whether to allow or block it. Filtering happens on-device; traffic is not tunnelled to a remote VPN server.

Because VpnService is used, Android may show a “VPN” indicator while the firewall is active — this is expected for local filtering. This app is not a traditional VPN service; it uses VpnService for on-device filtering and permission control.

Privacy & data safety
Developed in Germany with a strong focus on privacy and transparency. For details about data handling, please review the Google Play Data safety section.

Core firewall features are free and ad-free. An optional in-app purchase unlocks additional convenience features and supports ongoing development.

Only one app can use Android’s VpnService at a time. If another VPN or firewall app is active, you’ll need to choose which one to use. Blocking connectivity can affect app functions (for example, messengers need internet access to receive messages; streaming apps need internet to play). If something stops working, simply allow the app again or change the rule to Wi-Fi only.

Firewall No Root does not replace operating system security updates and cannot guarantee protection against every threat, but it can help you reduce unnecessary background connections and regain control of app internet access.

Ratings and reviews

Hello it worked until the new update.Now if i turn on the firewall,the android native private dns isn't working,and i don't have internet with the firewall's custom dns.Can u add a new update?Just the whitelisted apps working.

Nice... but the price not too much $23 lifetime... no one will subscribe $10.99/year, the logical option is the lifetime, but the price is high compared to other firewalls. Is sad that it will limit the amount of potential buyers. Providing a more fair price can actually increase a lot the number of buyers and profit. Just sharing my opinion... uninstalled this and will keep using my Netguard firewall.

hello, i have a very difficult time navigating all tech, but have been trying to trace back suspicious traffic like the weather and YouTube and games coming together 30 times today. it's really hard for me and sometimes I find something that connects people I know to keywords and code and problems in my real life, and sometimes I don't. but today I found your app running a black hole service in running apps in developer mode. I don't want to jump to conclusions and I know the subscription was i

What’s new

+ Speed Improvements
+ Improvements and bug fixes