The string references elements of different operating systems and file formats for application installation. Specifically, it combines a digital distribution service for Android applications with a mobile operating system developed by Apple, and a file format used for distributing and installing applications on the Android operating system. The intersection suggested by this term is technically problematic, as the Apple operating system does not natively support the installation of applications packaged in the mentioned file format.
The significance surrounding the term likely stems from a desire to access applications typically found on the Android platform within the environment of an Apple device. This could be driven by user preference for specific software, or a need to utilize applications not natively available for the Apple operating system. Historically, such needs have spurred development of emulators or virtual machine environments.