Would registering for a physical sporting event get hit by the 30% IAP fee? Spots are typically limited, so the app just helps coordinate signups, so that players don't show up to a completely booked session.
I'm also wondering if I can allow the user to pre-fund their account, for example with $30, so that they can sign up a $10 session and still have a balance of $20 in their account to sign up for more sessions.
morsecoder
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution