Best FREE Antivirus and Internet Security apps for Android 2018

by Julie Splinters - -

Google’s mobile operating system Android remains on the top. However, mobile threats targeting Android devices are also increasing. That is why every Android device should be protected and have an antivirus software installed. If you do not want to spend any money for the security application, then this article is for you. Reviewed by Pro presents you the most popular and trustworthy Android antivirus applications you can download for free! 

Best Free Mobile Antivirus for Android

Kaspersky Internet Security for Android

Kaspersky Internet Security for Android[1] offers free protection for Android smartphones and tablets. Kaspersky Internet Security offers a reliable and trustworthy protection. According to independent German testing lab, Kaspersky demonstrates excellent malware detection and removal rates.

Kaspersky Antivirus for Android

Kaspersky follows a freemium model and offers free basic features, such as Background Check, Antivirus Protection, Find my Phone features, Unwanted Calls, and SMS blocking, Web Protection. The application also supports Android Wear devices. However, if you want additional privacy and security features such as personal data and privacy protection, anti-phishing features, or App Lock you would have to purchase the Premium version. Kaspersky also offers 30-day free Premium trial so you can try the Premium features before purchasing it.

Kaspersky Internet Security for Android has a rating of 4.7 stars out of 5 by users in official Google Play app store and it was installed more than 50,000,000 times.[2]

Feature Score
Antivirus protection Excellent
Extra features Basic features
Scanning performance Quick and smooth

Kaspersky Lab is one of the most experienced cybersecurity companies in the world that was founded in 1997, Moscow, Russia. The company provides cybersecurity and antivirus solutions for businesses and individual users. 

Norton Security and Antivirus

Norton Security and Antivirus for Android[3] provide users trustworthy and reliable mobile security app. Users can choose between a free application that includes limited features or a Premium version ($24.99 for a multi-device license, per year).

According to independent German-based testing lab AV-TEST, the application was able to catch all the malware samples installed on the test device and demonstrated excellent antivirus protection.  

Norton Security and Antivirus for Android

The Free version includes Security, Protection and Privacy features including Android Antivirus, Remotely navigate, wipe or lock the lost or missing device, sync contacts and restore or share across all user’s devices, control protection, Safe Search and secured web browsing. Users also can block unwanted calls or SMS message, or take a photo of anyone using the device if it is lost or stolen. If you require premium features such as SafeWeb filtering, App Advisor or Privacy Reports, you can try them for 30 days for free. After the trial period ends, you would have to purchase the Premium version. 

Norton Security and Antivirus has a rating of 4.5 stars out of 5 in the official Google Play app store and was installed more than 10,000,000 times.[4]

Feature Score
Antivirus protection Excellent
Extra features A decent set of features
Scanning performance Heavy performance impact during scans

Norton is distributed by Symantec Corporation since 1991. The company provides anti-malware software and Internet security products across all major operating systems.

Sophos Mobile Security  

Sophos Mobile Security[5] offers users full features all free version without any ads! Sound too good to be true? Check it out. Sophos Mobile Security protects Android smartphones and tablets without any negative impact on your battery life or system performance.

Sophos mobile security

The free application also provides a wide list of security and privacy features including Antivirus Protection which allows users to perform on demand and scheduled scans; Loss and Theft Protection enables remotely control the device through text messages; Web Filtering features block malicious and dangerous sites; App Protection allows users to secure their applications with a password; Privacy Advisor features, Spam Protection and call blocking, Secure QR Code Scanner, Password Manager and Authenticator.  The application also allows users to easily and remotely manage Sophos Mobile Security easily by using Sophos Mobile or Sophos Central. 

The application has a rating of 4.4/5 and was installed more than a million times on Google Play app store.[6]

Feature Score
Antivirus protection Great
Extra features Many useful features
Scanning performance Medium performance hit during scans

Sophos Group Plc is a security software and hardware provider based in the UK. The company delivers products for communication endpoint, network security, unified threat management and more. 

Security Master 

Security Master[7] offers users feature-rich free version. The application is the upgraded version of the CM Security – the original version of the security app. Security Master is top-ranked tool app on the official Google Play app store and was named as the best antivirus software for Android by AV-TEST multiple times.

CM Security Master

As it was mentioned before Security Master provides users with a very useful range of security, privacy and optimization features, such as Antivirus that scans your Android that helps to keep your device and privacy safe and malware-free; Junk Clean feature intelligently scans and removes junk files; Phone Booster, Battery Saver, and CPU Cooler optimize your phone performance and speeds up it. The free version also includes a VPN service called SafeConnect VPN that presents free and quick VPN, proxy and unblock solution. Message Security, AppLock, Intruder Selfie and Disguise Cover are also included in the free version of Security Master. 

The application was installed more than 500,000,000 times and has a rating of 4.7 out of 5 stars on the official Google Play app store.[8]

Feature Score
Antivirus protection Inconsistent
Extra features Many security and privacy features
Scanning performance Informative scans with a medium performance hit

Cheetah Mobile is one of the largest mobile app developers based in Beijing, China. The company has more than 600 million monthly active users and develops a variety of mobile optimization software for Android devices. 

To read a full review please click here

DFNDR Security: Antivirus Anti-hacking and Cleaner

DFNDR Security[9] focuses on providing reliable and trustworthy antivirus protection. However, it also offers a very decent security and privacy feature set. The application also applies the freemium model and offers users Free and Premium versions. The Premium version only costs $4.99 per year and you can try all the features for free for 30 days.

DFNDR Mobile Security

According to AV-TEST, DFNDR Security scores from 95.7% to 99.9% in antivirus protection testing. These results show that the protection is a bit inconsistent. 

DFNDR Security even Free version provides a full set of features including Security Scan, Anti-Hacking, Lockscreen Charge Monitor, Memory Booster, Quick Cleanup, Applock and a VPN service. 

The application is rated 4.5 out of 5 and was installed over 100,000,000 times on official Google Play app store.[10]

Feature Score
Antivirus protection Inconsistent
Extra features Full set of features
Scanning performance Quick scans 

DFNDR Security is developed by a mobile software developer for Android devices PSafe. The company was founded in 2010 and since then successfully operates in Android security software industry. 

About the author

Julie Splinters
Julie Splinters - VPN service analyst

Julie Splinters is a VPN service analyst at, who specializes in VPN services and anti-spyware applications. Her major of English Philology and her passion for IT helped her choose the path of an IT writer.

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