Combo Cleaner Premium 1.3.7 | macOS | 8 mb Combo Cleaner is an antivirus and system optimizer created by a company called RCS LT. This application runs on Mac computers and works with all recent Mac operating systems. This application takes a different approach as compared to traditional antivirus suites. As well as an antivirus function, Combo Cleaner includes a disk cleaner, big files finder, duplicate files finder, privacy scanner, and application uninstaller.