Avast Antivirus & Security

Contains adsIn-app purchases
7.05M reviews
Content rating
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About this app

Protect against viruses & other types of malware with Avast Mobile Security, our free antivirus app for Android. Trusted by over 435 million people.

Protect your privacy by receiving alerts when spyware or adware-infected apps are downloaded onto your device. Secure your device against phishing attacks from emails and infected websites. Turn on the VPN to keep your online browsing private and safe, as well as to access your favorite paid streaming services when traveling abroad. Get alerts when your passwords have been compromised by hackers. Avoid scams with advanced scans and alerts.

With more than 100 million installs, Avast Mobile Security & Antivirus provides much more than just antivirus protection.

Free features:

✔ Antivirus Engine
✔ Anti-Theft
✔ Hack Check
✔ Photo Vault
✔ File scanner
✔ Privacy Permissions
✔ RAM Boost
✔ Junk Cleaner
✔ Web Shield
✔ Wi-Fi Security
✔ App Insights
✔ Virus Cleaner
✔ Mobile Security
✔ Wi-Fi Speed Test

Premium features for advanced protection:

Last Known Location: Check your device's last location before its battery died.
Scam Protection: Protect yourself from scammers with advanced security features and smart alerts.
App Lock: Keep your sensitive content secure and private by locking any app with a PIN code, pattern, or fingerprint password. Only you’ll be able to access them.
Remove Ads: Eliminate ads from your Avast Mobile Security & Antivirus experience.
Avast Direct Support: Contact Avast directly from the app to receive quick responses to your inquiries.

Finally, Ultimate users can enjoy our VPN (Virtual Private Network) as well - Hide your online activities from hackers and your ISP by encrypting your connection. You can also change your location to access your favorite paid streaming services from anywhere.

Avast Mobile Security & Antivirus in detail

Antivirus Engine: Automatically scan for viruses and other kinds of malware, including spyware, Trojans, and more. Web, file, and app scanning provides complete mobile protection.
App Insights: Discover how much time you spend using each app on your device and take back control of your phone-life balance.
Junk Cleaner: Instantly clean out unnecessary data, junk files, system caches, gallery thumbnails, installation files, and residual files to give you more space.
Photo Vault: Secure your photos with a PIN code, pattern, or fingerprint password. After moving photos to the Vault, they are fully encrypted and only accessible to you.
Web Shield: Scan and block malware-infected links, as well as Trojans, adware, and spyware (for privacy and safe web browsing, e.g. Chrome).
Wi-Fi Security: Check the security of public Wi-Fi networks, browse safely, and make secure online payments from anywhere.
Hack Alerts: See which of your passwords have been leaked with a quick and simple scan, so you can update your login credentials before hackers infiltrate your accounts.

This app uses the Device Administrator permission. This permission allows you to remotely lock and wipe your device from my.avast.com.

This app uses the Accessibility permission to protect visually impaired and other users against phishing attacks and malicious websites.
Updated on
Nov 28, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
Location, Personal info and 7 others
Data is encrypted in transit
You can request that data be deleted
7.05M reviews
Wade Adams
November 17, 2022
I have been using free version for several years and am extremely happy with its performance. It has kept me out of trouble numerous times. I have not minded the advertisements until recently when TikTok ads started running. The TikTok ad appeared to be trying to install a file. On further investigation it seems that it need the pinyin character set which I have no use for. I would like to not see TikTok ads for various reasons and may consider switching security app if this continues. Thanks
157 people found this review helpful
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Avast Software
November 21, 2022
Hey Wady, the ads should all be safe - they do not install or even try to install anything to your device. It's all tested. In case you feel otherwise, please reach out at android@avast.com. My colleagues would really like to have a look. David
Success WithAnderson
November 30, 2022
Although I know the ultimate goal is to get people to purchase your product, and I know it's Christmas time ( the best time to sell a product); I'm really frustrated with dealing with the daily reminder ads that require a multi-step process to delete. Please stop this unnecessary annoyance. The free version of the app I have is fantastic & currently all I need at this time.
9 people found this review helpful
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Avast Software
December 5, 2022
Hi, developing apps costs money, so in order to support our operation, we display ads within our FREE version and promote our Premium version, which doesn’t include ads or promotional campaigns. However, we are always collecting feedback and might change the way the ads and notifications are set at the moment. David*Avast
Sheri Leisa
November 30, 2022
Does The Job! I was having a terrible time with my Samsung Tablet bogging down. I'm not tech savvy at all. My son, who knows all about these things, installed Avast. I think it is the Boost Ram function that helps my problem. But I need to remember to always go to the Avast App whenever I turn off my tablet, upon restart, and Boost Ram before I do anything else. Well, it is a cheaper version Samsung Tablet, and not so great. Thanks Avast! This improved the performance quite a lot.
4 people found this review helpful
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Avast Software
December 2, 2022
Hi, it seems some app might be killing Avast running in the background. You can check https://dontkillmyapp.com, which is a nice summary of how various manufacturers use optimizing features. I hope it helps, David*Avast

What's new

* Regular fixes – Just the usual improvements and bug fixes to keep everything working smoothly.