Avast Antivirus & Security

Contains adsIn-app purchases
4.6
7.32M reviews
100M+
Downloads
Content rating
Everyone
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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 hundreds of millions.

✔ NEW! Scam Guardian Pro: 24/7 AI-powered scam protection 
■ Call Guard: 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 
■ Avast Assistant: Get answers in real time from Avast Assistant, your built-in AI partner 

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
Jan 13, 2026

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
6.81M reviews
Francine Steininger
January 10, 2026
The app is good but they are constantly trying to get you to purchase more options by scaring you with "you are not fully protected" messages after a screening. This is misleading and incredibly annoying. They should say you've passed all the tests, but if you would like more security then... instead of red lights and exclamation points.
21 people found this review helpful
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Avast Software
January 12, 2026
Hey Francine, we don't want to scare anyone. We just try to warn our clients about the potential harm. If you mind notifications or ads, please note you can control them, here's more info that might help: https://goo.gl/8QCizZ David*Avast
Al Reyes
December 6, 2025
Very easy to use and its constantly protecting me and warning me if there is an issue. I have not had any issues. The locking sensitive apps allow just another layer of protection. When I first downloaded the app, I loved the features and security now coming up on my third year of having the software I highly recommend it. Working in the financial world, clients who always have problems on their phone all have one thing in common. No security software. I always recommend Avast.
463 people found this review helpful
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Avast Software
October 12, 2020
Hi, thanks for your positive review, we are glad you like the app! David*Avast
travis
January 16, 2026
I have to say I'm just now discovering a few of the changes Avast Antivirus has made and I have to say from what I'm seeing so far I'm impressed. Keep it up. As we all know the threats to our on-line safety is growing more and more. Having Avast Security, Avast Cleaner, CCleaner and a good VPN has never been more important. These days it's good to pair Sec Apps with their own specialties. Complementing one another rather than competing. Body Guard + Ninja. Add a sniper and nobody will get in.
76 people found this review helpful
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Avast Software
September 23, 2025
Hey Travis, could you please be more specific? What kind of Chatbot? David

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.