Avast Antivirus & Security

Contains adsIn-app purchases
4.7
7.32M reviews
100M+
Downloads
Content rating
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 hundreds of millions.

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
Nov 10, 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

4.7
6.81M reviews
Luigi Rotta Módolo
December 17, 2025
I used Avast Mobile Security for over a decade, and used to be it was the best free mobile security solution available for Android, inclusively offering services for free that other apps only offered in the paid version… I wonder what went wrong? It started losing features a couple of years ago, and with the latest "update", most services that other apps offer for free are now only available in the paid version =( My loyalty lasted as long as it could, but time has finally come to say goodbye…
12 people found this review helpful
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Avast Software
December 17, 2025
We’re constantly running various experiments in order to optimize the monetization model to secure enough funds for supporting the development of the app providing key functionality for free. Thanks for understanding. David*Avast
carlosleonardo88
November 15, 2024
As a user of the free version, I am all willing to go through five to ten minutes of ads in order to support the application. However, you got to give us a safe way to close the ads: It is infuriating, after spending some time watching the ad play itself out, that clicking on what was supposed to be the button for closing the ad, instead opens some link in your web browser. That is very vexing given the risks of opening unknown, unwanted links on the internet, particularly from an antivirus app.
41 people found this review helpful
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Avast Software
November 16, 2024
Hi carlosleonardo88, all the ads within our app should be skippable. In such case please contact my colleagues on https://support.avast.com - they would really appreciate your help with investigating this unusual problem, thank you. David*Avast
Auraelius Wrinn
April 16, 2025
I wish the app would stop asking for a rating. That said, I've used Avast, exclusively, for my antivirus and maintenance needs for well over a decade. Not only has Avast unfailingly safeguarded my equipment, but the features available in the premium version have really helped to keep my hardware operating at like-new efficiency. Update, a couple years later: yup, still awesome.
2,194 people found this review helpful
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Avast Software
February 5, 2024
Hi Auraelius, thanks for sharing your positive experience with our application, we really appreciate it. 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.