Avast Ultimate is an Avast products bundle that consists of Avast Premium Security, Avast SecureLine VPN, Avast AntiTrack Premium, Avast Cleanup Premium and mobile versions. By buying the bundle, you save money and ensure that Avast provides you with the maximum protection, takes care of your network connection, privacy and passwords. We offer the following Avast Ultimate subscription bundles: Avast Ultimate (Multi-Device): Can be used on 10 devices simultaneously and includes products for Windows, Mac, Android, and iOS. Avast Windows Ultimate: Can be used on 1 Windows PC and includes products for Windows only. Avast Mac Ultimate: Can be used on 1 Mac and includes products for Mac only. Avast Mobile Ultimate: Includes products for Android only. You can activate each product on 5 devices simultaneously.