This article serves to clarify that Hole19 doesn’t support Family Sharing.
1 Apple ID = 1 Premium subscription = 1 Hole19 account.
Unfortunately, Apple shows the 'Family Sharing' information for every App, although it says that 'In-app purchases can't be shared with family members. We've already tried to remove that information from the App Store so that our golfers don't get confused but it's not possible according to Apple's guidelines.
If you have any questions don't hesitate to contact us at firstname.lastname@example.org.