Avast Antivirus & Security

Contains adsIn-app purchases
6.96M 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.

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.
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
Jun 17, 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
6.96M reviews
Km S
June 29, 2022
6/29/22 Update: App Lock Still Not working? App won't even start till a minute or so After phone turns on ☹️. 6/22 Have used this for many years, using "premium" version for last couple. Can't determine if it's doing what it claims but the last 2-3 months App Lock is not functioning. Support said to un/reinstall. Did that a couple times. App lock feature spotty at best. Side note - the new UI with the childish characters... 🤮 Don't think app will be renewed.
78 people found this review helpful
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Avast Software
June 24, 2022
Hi, it seems some app keeps killing Avast running in the background (which turns off the web shield). You can check https://dontkillmyapp.com, which is a nice summary of how various manufacturers use optimizing features. I hope it helps, David*Avast
Terrence S
June 24, 2022
I have been using Avast over 3 years and so far it has not let me down. The total premium security is well worth it as it always warns and stop you if malicious attempts are made. For the PC I would highly recommend for excellent protection against the latest threats and for mobile it is exceptional but with a bit of a battery drawback if you have a small capacity like 2000mah. Overall, give it a try and test it fully before you make any decision/rating.
83 people found this review helpful
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Avast Software
June 27, 2022
Hi Terrence, thanks for your positive review, we are glad you like the app! David*Avast
Sylvia BowenGibbs
June 24, 2022
The basic, free program is great. Our computer Tech strongly recommended it. However, we upgraded to the premium and when we cleaned our phone it really screwed things up. So I don't recommend doing that. But otherwise it's a great antivirus program! It screwed things up by deleting apps I used and misdirecting others so they didn't work right anymore. I'm not saying don't use the app. Just don't upgrade!
34 people found this review helpful
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Avast Software
November 8, 2021
Hi, thanks for your feedback, could you be more specific? What exactly happened? We appreciate any suggestions for improvement. Thanks, David*Avast

What's new

* New default theme! Check out our new dark theme
* Network Inspector (previously named Wi-Fi Inspector) now provides extra details about any network vulnerabilities detected
* Scam Protection offline error messages have been fixed
* You also have the freedom to enable and disable alerts in Scam Protection
* New polished designs so you can enjoy a smoother experience
* Bug fixes and stability improvements to keep your protection going strong