Avast Antivirus & Security

Contains adsIn-app purchases
4.6
7.34M reviews
100M+
Downloads
Content rating
USK: All ages
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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. Our trusty Email Guard will monitor your email accounts for suspicious emails.

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

Free features:

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

Premium features for advanced protection:

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.
Email Guard: Your inbox will be continuously monitored for any suspicious emails, making your mailbox a safer place.

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: Browse your apps and see what permissions are requested in each individual app
Junk Cleaner: Instantly clean out unnecessary data, junk files, 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 Guard: 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.
Email Guard: We’ll keep your inbox safe by continuously monitoring your emails for anything suspicious.

This app uses Accessibility Service API to protect the visually impaired and other users against phishing attacks and malicious websites via Web Guard feature.

Contacts: A particular subset of this permission group is required to access device accounts to enable “restore a pin” action as part of App Lock feature.

Location: Allows Network Inspector feature to identify new networks and scan them for threats.
Updated on
Oct 27, 2025

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

Ratings and reviews

4.6
6.83M reviews
Cipher Nine
November 2, 2025
I used to love avast, but I'm extremely unhappy with the current version. Different scan options have been removed and when asking the assistant, it tells me where they were in the app even though they're gone. Also, the assistant doesn't explain what the smart scan involves exactly, which really defeats the purpose. For me, it's sadly time to switch as a result.
Did you find this helpful?
Avast Software
November 3, 2025
Hey Cipher, thanks for taking your time. There have been some changes in the recent version and we are now collecting the feedback. We will certainly take it into account and may change the way our app looks and performs in the future. David
A Google user
March 25, 2020
After the installation, Avast tells you to either opt for one of their paid plans or accept personalized ads (and thus trackers). I've been told there was in fact a way to opt out of this in the free version, sufficiently simple to find under settings -> personal privacy. This setting only refers to data being used to improve the app though, NOT advertising trackers. The app is very obscure in its wording regarding ads. Not to say others didn't do that as well, but bad practice nonetheless.
243 people found this review helpful
Did you find this helpful?
Avast Software
March 26, 2020
Hi, data we used for analytics was de-identified and aggregated, but protecting people and our users' trust is Avast’s top priority and must be embedded in everything we do. For this and other reasons, Avast's executives have decided to terminate the whole subsidiary data collection with immediate effect. Read more on http://bit.ly/2RZO1DI.
Steven Gates
July 25, 2025
Avast is operating well - deleting junk files, alerting me to compromised accounts, etc. However Avast BLOCKED internet connectivity on my Dell computer. Per standard reasoning - what did I LAST INSTALL on that computer? Avast. Uninstalled Avast and internet connectivity returned, so that was disappointing. That said, no issues with the mobile version of Avast so far and A LOT CHEAPER THAN Norton. If I can make Avast work on my Dell PC, then it is curtains for my expensive Norton!
556 people found this review helpful
Did you find this helpful?
Avast Software
June 30, 2025
Hi Steve, that is exactly why we are here, thanks for your feedback! David*Avast

What’s new

* You'll experience more stability and better performance thanks to small fixes throughout the app.
* Your feedback is important to us. Let us know about your experience so we can make the app even better for you.