I am continously getting rejected by the macstore review team claiming :
Your app appears to be mostly unmodified port of your iOS app.
Additional Notes:
Your current design of full screen mode seems OK. However it appears to be still an iOS port. Reason being the app has no system integration such as menubar extra, notification, shortcut, Dock badge, and Mac extensions etc. We suggest to add some native macOS functionalities that are appropriate to your app concepts