In-app purchase on MacOS?

Anyone having implemented in-app purchases on MacOS?

It is not implemented in "FMX.InAppPurchase", but according to the Apple documentation both platforms (iOS and MacOS) uses the same StoreKit library. This indicates that the current code for iOS (FMX.InAppPurchase.iOS), could be used directly or with minor modifications on MacOS.

Before going down that road, I would like to hear if anyone have tried it? - or maybe used another way to implented it.