HomeAndroid6 Best Free Firewall Apps for Android in 2021

6 Best Free Firewall Apps for Android in 2021


A firewall is a system or software that helps you filter network traffic. The firewall inspects incoming traffic from the internet and allows only safe and secured sites to access your data and information.

Firewall blocks and prevents viruses and hackers from entering your device. There are many free apps that help you protect yourself from these attackers. We have curated this list to let you know about the best and free firewall apps for your Android device.

The name ‘Firewall’ was coined after walls of the same name were built between buildings to prevent the spread of fire. Before we start with the best apps you can try, you should have a bit of knowledge about what a firewall is? Firewall protect our privacy and increase security by acting as an intermediary between our connection and other sites on the internet.

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What does a firewall app do?

Do you install apps from unknown sources other than Play Store? Then before using such apps, you must know what a firewall is and how you can keep yourself miles away from attackers and potential viruses.

Internet is a vast space with millions upon millions of sites and connections. Not every one of them is safe. While browsing online or installing apps, you may be at the risk of running into a malicious site. Such sites put your private information and data at risk of getting tampered with or stolen. This is where the firewall comes into play.

A firewall app in Android prevents unknown sites and malware from gaining unauthorized access to your device. The firewall will also prevent the user from entering suspicious websites that could potentially be a host for viruses or scams.

Without a firewall installed or connected to your device, you have a constant threat of having your security and privacy compromised. Without a firewall, viruses could have unrestricted access to your device. As long as your device is connected to the internet or any other external network, a firewall is necessary to safeguard you from unwanted cyberattacks.

How a firewall app works?

A firewall can be installed either as an Application or Hardware. Firewall applications on your Android are programs that monitor the traffic to and from your device. In comparison, hardware firewalls are usually built into routers or other network devices. Both types work well; however, hardware firewalls could safeguard the number of devices connected with the router or network device.

Below is the list of firewall apps that will help you filter all incoming and outgoing traffic on your device and block connections that could be dangerous.

The importance and features of a firewall are not as high in mobile devices as computers; however, it is necessary to remain safe while one is on the internet. Installing a firewall app on an Android device can help you manage network traffic, increase browsing speed and provide security. It helps to improve the device’s overall safety and boost its performance.

Best Firewall Apps for Android

As mentioned above, due to firewalls’ utility and importance, all devices connected to the internet must have a firewall installed, even mobiles. Listed below are some of the free firewall apps that we recommend:


AFWall+ is a popular Android firewall app as it provides top-notch security to the device it is installed on. Not only does AFWall+ provide security, but it also allows users to customise the permissions and internet access used by each app. AFWall+ can be directly downloaded via Google Play. It is free, open-sourced and easy to use.

AFWall+ Firewall App

The app does not feature any advertisements. However, it does not completely protect the device from virus attacks unless root access is granted. It is one of the best options to go for while competing with other Android firewall apps.

Download: Android

NoRoot Firewall

NoRoot Firewall provides you with good security while not needing any root privileges. It differs from the other apps on this list because it does not require any permissions to operate on your device.

NoRoot Firewall For Android

It has a simple and easy-to-use layout. NoRoot Firewall will allow you to block any app from accessing the internet. The App also has a notification system that will send notifications as soon as any suspicious activity is reported.

Download: Android


NetGuard is another top option to choose if you’re looking for a firewall app on your Android device. It provides both simple and advanced methods to keep your device secure. This app does not require root to operate. It is supported on all Android 5.1+ versions. It notifies when an application accesses the internet and blocks malicious software and sites.

NetGuard - Best Firewall App For Android

NetGuard grants you to allow an application to access or decline the internet permissions of an application. It allows all of these features for free, making NetGuard one of the best firewalls that can be downloaded on an Android device.

Download: Android

MobiWol: NoRoot Firewall

Mobiwol - Android Firewall App

MobiWol is a free app that can be downloaded from Google Play. MobiWol does not require you to root your smartphone. Similar to other firewall apps, it provides high security without having to interfere with complicated terms. The app is simple and easy to use.

Download: Android

NetPatch Firewall

NetPatch firewall is another excellent option if you are looking for a firewall to install on your Android device.

It provides good security to your device and guards it against malicious sites and suspicious IDs.

NetPatch Firewall For Android

Using NetPatch, you can easily block any network that you do not want to be a part of. This firewall allows you to have complete control over your device.

Download: Android

VPN Safe Firewall

It allows users to control their network activity while protecting and securing the device. This is one of the best options to go for if you are looking for a good firewall for your Android device. It is also an easy-to-use app that many people across the globe prefer.

VPN Safe Firewall - Best Firewall For Android in 2021

It is a simple app with a lot of utility. It works very well with network carriers such as WiFi, LTE, 3G, 4G, etc. You can easily block applications, networks and even block background access by unknown and unauthorized apps, making this firewall app one of the best options from its competitors.

Download: Android

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So, how is our recommendation on the best firewall for Android? Hope you got the best app of your intent. Do not forget to comment down below the app that stood out for you, and also let us know if we missed any app on this list. There is a saying that “Safety isn’t expensive, it’s priceless”.



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