Avast Antivirus & Security

by Avast Software

4.6 7.2M+ reviews
429M+ Installs
12/06/2011 Released
Avast Antivirus & Security icon
Avast Antivirus & Security icon
Tools

Avast Antivirus & Security

by Avast Software

4.6 7.2M+ reviews
429M+ Installs
12/06/2011 Released
Avast Antivirus & Security screenshot 1
Avast Antivirus & Security screenshot 2
Avast Antivirus & Security screenshot 3
Avast Antivirus & Security screenshot 4
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Avast Antivirus & Security screenshot 6

Ratings Breakdown

4.6 ★★★★★ 7.2M+ ratings
5 79%
4 13%
3 2%
2 1%
1 5%

Data from Google Play at the time of writing.

What This App Actually Does

Avast Antivirus & Security (now rebranded around the Avast One umbrella) is a free-to-start mobile security suite for Android. It bundles virus and malware scanning, a Wi-Fi network inspector, a phishing-focused Web Guard, a VPN, and a junk-file cleanup tool into one app. It’s aimed at everyday users who want a single app to cover antivirus scanning, safer browsing, and basic device tidying without hunting down separate tools, plus anyone who wants a scam-call and spam-text blocker layered on top through Scam Guardian Pro.

Where It Genuinely Delivers

The core free tier holds up well according to real users, who point to device scanning, malicious website protection, and Wi-Fi network scanning as solid and worth having even without paying. One reviewer noted it caught a virus they didn’t even know was on their phone, and another highlighted that the free version covers ‘all the essentials’ including a data breach email check and junk file cleanup. Several users also praised how light it runs, with one calling it low on battery and system resource use while being user friendly and low cost overall.

Battery Drain and Browser Limitations

Not every user has the same experience with performance. One reviewer on an older Samsung Galaxy S III said the app became a memory hog, which knocked their rating down from what would have been a five-star review. Another practical limitation raised is that the monitoring list only supports one primary web browser at a time, meaning multi-browser users don’t get full coverage, an issue flagged as a clear area for improvement.

Subscription Confusion and Paywall Frustration

The most serious complaints in user feedback center on subscriptions and paywalls rather than the core antivirus engine. One long-time user described being signed up for a $1.99-a-month monitoring add-on almost by accident during a promo popup, then dealing with charges they didn’t fully understand. Another long-term user said the experience has gone downhill because features are now split across separate apps requiring different subscriptions, making it hard to cancel unwanted charges. A separate reviewer who already pays for premium reported being logged out mid-setup and prompted to pay again, and said even basic customer assistance now sits behind an additional paywall despite an active subscription.

Permissions Worth Knowing About

The app requests some permissions that go beyond a typical scanner, including Accessibility Service access for phishing protection, a subset of Contacts access tied to the PIN-recovery App Lock feature, and Location access so Network Inspector can identify and scan nearby Wi-Fi networks. These are disclosed and tied to specific features, but users uncomfortable granting broad permissions to a security app should review each one before installing.

Who Should Actually Download This

If you want a free, reasonably light antivirus and Wi-Fi scanner with decent phishing protection, the base tier is worth trying and matches what long-time users describe as reliable. If you’re on an older or lower-RAM device, watch for slowdowns. And if you’re considering premium tiers, read subscription terms carefully before tapping through any promo prompts, since billing confusion and paywalled support are the most consistent complaints from paying users.

Pros

  • Solid free-tier virus and malware scanning
  • Light on battery and system resources
  • Effective Wi-Fi network threat scanning
  • Includes data breach email checking
  • Low-cost premium option available

Cons

  • Only monitors one browser at a time
  • Can drain memory on older devices
  • Confusing subscriptions and paywalled support

What Real Users Say

Jason Lu 5/5

“User friendly, low cost, and doesn't use a lot of battery and system resources. One thing I would add for possible fufure improvement is that if the Avast can add multiple web browsers into the monitoring list (currently, it only allows for the primary browser) it may add more value to the software. Well, just a thought. Great app, and…”

👍 862 found this helpfulDeveloper responded
Rick Bierma 4/5

“The free version won't perform its comprehensive scan automatically, but it notifies you after a week without running one. With that in mind, the features offered in the basic version are solid and worthy of consideration when you're deciding how to best keep your devices protected. EDIT: In Android 17, Google's Advanced Protection won't allow Avast access to accessibility permissions,…”

👍 197 found this helpfulDeveloper responded
D. Crawford 4/5

“I like this app very much if you have the regular version. I made the mistake of signing up for one of the advertising promos when logging off one day. I signed up for the $1.99 per month monitoring a step down from the $2.99 a month. I paid the first month right then and the service started. Well the…”

👍 164 found this helpfulDeveloper responded

Reviews sourced from Google Play, selected by helpfulness at the time of writing.

App Info & Permissions

Developer Avast Software
Content rating Everyone
Contains ads Yes
In-app purchases $0.99 - $139.99 per item
Installs 429M+
Released 12/06/2011
Price Free

Permissions this app requests

📷 Camera Take pictures and videos
👥 Contacts Find accounts on the device; read your contacts
📱 Device ID & call information Read phone status and identity
🪪 Identity Find accounts on the device; add or remove accounts
📍 Location Approximate location (network-based); precise location (GPS and network-based)
📞 Phone Reroute outgoing calls; read call log; read phone status and identity
🖼️ Photos/Media/Files Access USB storage filesystem; read the contents of your USB storage; modify or delete the contents of your USB storage
💬 SMS Read your text messages (SMS or MMS); receive text messages (SMS)
💾 Storage Read the contents of your USB storage; modify or delete the contents of your USB storage
📶 Wi-Fi connection information View Wi-Fi connections

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Frequently Asked Questions

1

What is Avast Antivirus & Security?

It's a mobile security app for Android from Avast Software, part of the broader Avast One suite. It combines antivirus scanning, a Wi-Fi network inspector, phishing protection through Web Guard, a VPN, and a junk-file cleanup tool in one app. It's designed for users who want an all-in-one security app rather than separate tools for each function.

2

Is Avast Antivirus & Security free?

Yes, there's a free tier that includes core virus scanning, malicious website protection, and Wi-Fi network scanning, which users report is solid on its own. Additional features like the VPN, call blocking, and email monitoring sit behind paid tiers such as Scam Guardian Pro. Some users have reported being signed up for low-cost add-on subscriptions accidentally through promo prompts, so it's worth reviewing any offer carefully before confirming.

3

Does Avast slow down my phone?

Most users describe it as light on battery and system resources, but experiences vary by device. At least one user on an older Samsung Galaxy S III reported it became a memory hog, which affected their overall rating. If you're on an older or lower-spec Android phone, it's worth monitoring performance after installation.

4

Can Avast scan more than one web browser?

According to user feedback, the monitoring list currently only supports a single primary browser rather than multiple browsers at once. This was flagged by a reviewer as a limitation that reduces the app's value for anyone who regularly switches between browsers. It hasn't been reported as fixed based on available user reviews.

5

Is it easy to cancel Avast subscriptions?

Some users report difficulty here, including being signed up for a monthly monitoring charge through a promo popup and struggling to stop it afterward. Another long-time user said features are now split across multiple apps each requiring separate subscriptions, adding to the confusion. If you subscribe, it's a good idea to track exactly which plan you signed up for and check your app store subscription settings directly.