Thanks for your response. The 30% fee might be workable with digital products.
Our research has determined that virtual coaching is indeed subject to 30% app store tax. We can't pay our professional coaches fairly if we give 30% revenue to any app store, and we don't believe in creating a business that pays it's providers below market value compensation (and sad that this 30% tax encourages this).
I really hope this fee is re-evaluated for live services. We have decided to do a website based MVP and if all goes well, we may stay as a web based business until this rule changes.