Avast One: Antivirus, Security

Contains adsIn-app purchases
4.6
7.3M reviews
Content rating
Everyone
100M+
Downloads
Content rating
Everyone
In-App Purchases
Learn more
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About this app

Protect against viruses & other types of malware with Avast One, our free All-in-one Mobile security app for Android. Trusted by hundreds of millions - much more than just antivirus protection. 

Avast One is your personal digital guardian; choose protection your way, for your life's online moments. 

Avast One
Avast Free Antivirus - Stay safer from viruses and other malware with award-winning (AV-Comparatives) security that’s free and easy-to-use
Scam Guardian - Stay safer from scams with expert help
Avast SecureLine VPN - Keep your online activities hidden from internet service providers, hackers, and advertisers with our private VPN
Avast Cleanup - Clean up your devices by getting rid of junk files like browser history, duplicate photos, and old contacts

Antivirus
Antivirus - Automatically scan for viruses and other kinds of malware, including spyware, Trojans, adware, ransomware, and more. Web, file, and app scanning provides complete mobile protection.
Mobile Security - Keep your device safer against viruses and malware with 24/7 protection
Hack Alert - Stay informed about password leaks 
Network Inspector (Wi-Fi Security) - Confidently connect to Wi-Fi anywhere. Stop hackers from accessing your personal data.
Virus Cleaner
File Scanner
■ Secure your device against phishing attacks from emails and infected websites

Scam Guardian
■ 24/7 AI-powered scam protection
Web Guard - Advanced AI tools to help keep you safe from hidden scams while browsing, banking, and shopping online. Scan and block malware-infected links, as well as Trojans, adware, and spyware (for privacy and safe web browsing, e.g. Chrome).
Avast Assistant - Think someone’s trying to scam you? Get answers quickly from Avast Assistant, your built-in AI partner

Scam Guardian Pro
Call Guard (Call Blocker) - Automatically blocks scam calls and labels if the call is a potential scam, spam, or a verified business
Safe SMS - AI-powered scam protection for every text message
Email Guard - We’ll keep your inbox safe by continuously monitoring your emails for anything suspicious

Avast SecureLine VPN
■ Protect your privacy
■ Keep your online activities hidden from internet service providers, hackers, and advertisers with our private VPN (Virtual Private Network)
■ Use the perfect location for whatever you’re doing 
■ Connect to over 100 locations worldwide, so you can enjoy what you’re doing more securely and privately. 
■ Watch shows and sports wherever you are more safely with streaming-optimized servers 

Avast Cleanup
Phone Cleaner - Clean up your devices by getting rid of junk files
Browser Cleaner - Get rid of junk files like browser history, temporary files, and cookies that can slow your phone down and compromise your privacy

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
Mar 25, 2026
Events & offers

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
6.79M reviews
Andrew Brzoska
March 15, 2026
The free tier is great. It has all the essentials, like device scanning for viruses and malware, suspicious/malicious website protection and WIFI network scanning. It can also test your connection speed, clean the junk files from your device, and check to see if you email is listed in any data breaches. The only small issue I have is that you can't set the app to automatically scan your device with the free version, but I just set a reminder for myself to manually scan, problem solved.
19 people found this review helpful
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Avast Software
March 18, 2026
Hi Andrew, thanks for your positive review, we are glad you like the app! David*Avast
Scott Daniel Beverst
February 4, 2026
Is there anything this system DOESN'T protect? The more I navigated through the app, the more I saw what it could do. And I have the free version! I loved Avast! on my PC. Seems to be too much of a memory hog on my Samsung Galaxy S III. Otherwise, would've given it a 5-star rating. Needs to be streamlined for phones to be less cumbersome on the other running apps. Slows them down too much. Update: It's 11 years since my last review. I'm now in my 2nd year on a paid subscription for my Motorola.
86 people found this review helpful
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Avast Software
February 4, 2026
Hi Scott, thanks for sharing your positive experience with our application, we really appreciate it. David*Avast
Cierra Perry-Hubbard (Golden)
January 22, 2026
Worth it. The first time I downloaded it, It caught Virus on my phone that I didn't even know about. Yes, The ads of the free version are a little annoying, but it typically only gives you one or two during your basic run down. It's better than having no protection. Plus you can just purchase the no ads thing. It also continues to scan in the background to make sure they catch stuff that actively tries to mess stuff up. 100% Try it out. Been using it for a good minute now. Hasn't failed me once.
79 people found this review helpful
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Avast Software
February 4, 2026
Hi Cierra, so glad to read messages like this - thank you! David*Avast

What’s new

• Avast Mobile Security has become the new Avast One, featuring a fresh and easier-to-use design
• Your subscription remains the same, so you can continue using everything as before
• Your new dashboard puts your most-used features front and center
• Choose the protection that fits you by mixing and matching plans