Google has Material Design, Microsoft has Fluent and (unofficially) Metro.
About two decades ago, the User Interface for Mac OS X was called Aqua but I do not see this term used in practice as much anymore (it does not even have a StackOverflow tag like Material Design and Microsoft-Metro have).
Is there a specific name (official or unofficial) for the design language across Apple platforms?
On this page in Apple's website you'll find the phrase "iOS design language". The macOS design language for a long time was Aqua but since Mojave, Aqua is treated like a legacy term in the SDK.
Flutter calls iOS design "Cupertino", am not sure how relevant that is however, there should be a reason that Google developers has named that set of components Cupertino, other than the fact Apple Park is located in Cupertino, California (maybe private shared documentation?); or maybe not as it is referred iOS design language in rest of the documentation and they just wanted some name usable in code. Brought the finding here as I liked Wikipedia to have an entry for the design language about iOS design in addition to Material Design but I feel there is lack of documentation for the topic so am requesting people here to link related content in preparation of building such entry.
Yes , in fact i've just had a uni class about flutter, where they call Apple's "User Experience", Cupertino.
