This suite is good at what it does, but you can do better when it comes to getting full protection across all platforms. The full cross-platform suite offers rich protection for Windows and Android, less for macOS, and very little for iOS. Both Avast Premier and Avast Internet Security have departed from the lineup. Avast has streamlined that pattern, with just free Windows and macOS protection apps plus the all-inclusive Avast Premium Security. Many companies offer security at four distinct levels: free antivirus, feature-enhanced commercial antivirus, security suite, and cross-platform top-tier mega-suite. Best Malware Removal and Protection Software.