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Hello, my company is planning the launch of a new app. It is planned that the app works with an invite-only mechanism so that only users on the platform can invite other users. This means that for not invited users the app can't be used. When they try to sign up they will receive information about the invitation process, however, they won't get any app functionality. We are wondering whether this is in line with apple's app policy and whether such an app would be accepted to the app store (we are planning to make the app open for all after a while)? Thanks in advance Hanno