Feature | Avast free antivirus | Avast Internet Security | Avast Premier |
Virus blocking | + | + | + |
Wi-fi scanning | + | + | + |
Securing passwords | + | + | + |
Avoiding phishing sites | – | + | + |
Detecting dubious apps | – | + | + |
Advanced firewall | – | + | + |
Blocking email spams | – | + | + |
Ransomware security | – | + | + |
Secure webcam | – | – | + |
Shield sensitive files | – | – | + |
Automatic app updating | – | – | + |
Annual subscription per 1 device | – | $30.00 | $35.00 |