Windows still dominates the desktop, but many households include Macs as well. Cross-platform multi-device suites give you one source of protection for all your devices. Typically you don't get as many features on macOS. In fact, most companies just offer a Mac antivirus, not a full suite. Be sure to take advantage of the option to protect your Macs. They're not immune to malware. Android devices are ubiquitous, and the Android platform isn't locked down the way iOS is. Even if you stay away from third-party app stores and refrain from jailbreaking your device, you can still get hit with Trojans, ransomware, and other kinds of Android malware. Smart users protect their devices with an Android antivirus. All the best Android antivirus utilities include antitheft features such as the ability to locate, lock, or wipe a lost or stolen device. Some include bonus features like blocking unwanted calls or warning when you connect to an insecure Wi-Fi network. As for iPhones and other iOS devices, Apple's built-in security makes life tough both for malware coders and antivirus writers. Many cross-platform suites simply skip iOS; those that don't typically offer a seriously stripped-down experience. Given the platform's intrinsic security, it rarely makes sense to expend one of your licenses installing protection on an iPhone.