Is there a specific name I need to rename the MyPlayground file in order to submit it to the WWDC Swift Student Challenge?
WWDC Student Challenge
No, there is no specific requirement on the naming.
But you should find a better name, to show you take care of all details in your app design. That can just help…
Your app should have a .swiftpm file extension if that's what you're asking. Or at least that's what they required for submissions last year.