Hi, so I'm building this app, it's kinda market place. One side can offer their services, other side can search and buy a monthly or even a year subscription from one seller. Let's get this example: free users can write a document. Than he can search and buy a service from someone else to help him with it (write it from scratch, fix some typos, etc) The service can take place inside the app (e.g. via chat or build-in editor) or outside of the app (it's my job to keep people doing that via my app). Users with subscription will not have any extra features that free users don't. The only exception - they can contact and get help from the seller of the service they bought from. In this case the business model is to charge some small fee and leave the rest to the service seller. He (service seller) will invoice me directly in real-live. In this case - will apple charge me 30% fee? I have to include that in my business model. Also worth saying - there will be a web-app with this functionality, and option to pay a subscription there. And I know I can't directly point users from app to website for payments. I have to you in-app-purchase and I'm perfectly fine with this. and yet another small question - if above answer is "not, apple won't charge 30% for that" and I will offer some extra in-app-purchase for some extra featuers. Will it be a problem when for some in-app-purchase there is no fee and for some others there will be? Just thinking :)