In my case, we sell a $5 app with an additional premium upgrade IAP. We're trying to promote referrals to the premium upgrade IAP.
Here's how I think it would work:
customer A signs up to IAP referral program inside app
customer A gets sharable code/url
customer A sends code to customer B
customer B downloads app, purchases IAP using code
customer A receives reward
2) Is it only a problem because the referral program ORIGINATED within the app? In other words, if we launched this program exclusively on our website, would Apple take issue with it?
Thanks