I've been developing a Playground that works just fine on the Swift Playground app on Mac. I used the Swift Playground Author Template from Apple.
Is it a Swift Playground or an Xcode Playground? I'm a bit confused given that I tested my Swift Playground on Mac, not on iPad.
You need to submit a .swiftpm which can be created with Xcode on Mac or the Playground app on iPad.
You need to submit a .swiftpm which can be created with Xcode on Mac or the Playground app on iPad. To do this on Mac you DON'T use the swift playgrounds app(on App Store). You use Xcode by:
File > New > Project...
under the iOS tab there should be a Swift Playgrounds App choice.