No, this is not true. At the company I work, we have an app for a customer where you can purchase things on their site. For a long while you could sign up in t

No, this is not true. At the company I work, we have an app for a customer where you can purchase things on their site. For a long while you could sign up in the app until one day where apple literally said (on a super minor bugfix upgrade): "If you are signing up users in your app, we are contributing to your revenue. We do not want to do that, unless you are using in app purchases". This particular app could not use IAP for technical reasons, so we had to remove sign up from the app. That is how the rule works edit: Although, your point about the case by case basis could apply here, although this is not on a spotify scale, I assure you :)