iCUE Apps iCUE Apps is a new modular software platform from Corsair that replaces the monolithic iCUE 5 application with a lightweight core Device Manager plus independently installable, purpose-built apps for lighting (Murals), monitoring, and integrations with Elgato and other brands. It supports new devices that iCUE 5 will not, while remaining backwards-compatible with existing hardware. Currently in public beta for Windows.