Avast One Antivirus Review – Hands-On Testing & Insights (2025)

Trio Antivirus Review tested Avast One on Windows 11 and Android devices to evaluate its real-world performance, protection capabilities, and usability. This review is based on actual testing, not just generic feature lists.

Key Features & Our Observations

• Real-Time Protection: Avast One scans files and downloads instantly. In our hands-on tests, it blocked most common malware, ransomware, and adware immediately.
  
  

• Basic Antivirus Protection: Offers standard virus and malware protection. During testing, Avast One successfully detected and quarantined test malware files on both desktop and mobile.
  
  

• Wi-Fi Inspector: Scans home and public networks for vulnerabilities. We tested it on our home network, and it flagged an outdated router firmware as a potential risk.
  
  

• Web Shield: Blocks malicious websites and phishing attempts. During simulated attacks, Web Shield successfully prevented access to harmful URLs.
  
  

Pros

• Free to Use: The basic version provides solid protection at no cost.
  
  

• User-Friendly Interface: Easy to navigate, even for beginners.
  
  

• Lightweight Performance: Minimal system slowdown during background scanning on mid-range devices.
  
  

• Frequent Updates: Threat definitions and security patches are delivered regularly to maintain protection.
  
  

Cons

• Limited Features: The free version lacks advanced tools like VPN, password manager, or parental controls.
  
  

• Upselling Prompts: Avast occasionally prompts users to upgrade to premium features.
  
  

• Privacy Considerations: Avast has faced past criticism regarding data collection. While our testing didn’t detect issues, users should review privacy settings.
  
  

Real-World Performance

In our testing:

• System Impact: Avast One used minimal CPU and RAM during idle scans, which is great for older devices.
  
  

• Detection Accuracy: Caught nearly all test malware and phishing URLs during active scanning.
  
  

• Network Protection: Wi-Fi Inspector reliably identified vulnerabilities and provided actionable advice.
  
  

For users who need basic, free antivirus protection, Avast One delivers consistent results without burdening system performance.

How Avast One Compares

Compared to Norton 360 and Bitdefender Total Security:

• Avast One is lighter and free, but it lacks advanced features like VPN and identity monitoring.
  
  

• Premium solutions provide more comprehensive protection but come at a cost.
  
  

Final Verdict

Avast One is a solid free antivirus solution for users on a budget or those needing simple protection. Its low system impact, effective real-time scanning, and network protection make it a reliable choice for casual users.

However, if you require advanced privacy tools, identity monitoring, or VPN access, a premium antivirus suite may be a better fit.

Disclaimer:
Trio Antivirus Review is an independent website. We are not affiliated with or endorsed by Avast, Norton, McAfee, Bitdefender, or Kaspersky. All product names, trademarks, and registered trademarks are the property of their respective owners. This site provides informational antivirus product reviews only.