Given the zeal Apple has for their 30%, they absolutely will be demanding fully open books and tracking for that outbound link. There's no firsthand knowledge

Given the zeal Apple has for their 30%, they absolutely will be demanding fully open books and tracking for that outbound link. There's no firsthand knowledge because this is the first time Apple's actually had to chase companies for the fee. In fact, their whole argument against Epic was that banning steering made it easier on both parties to attribute revenue.