I've got a possibly naive question about DropletPay.

I was under the impression that Apple essentially took 30% of all money that flows through an app. Is there an exception for payment / ecommerce apps? Is there a special agreement in place? Is this app a "timebomb" that just hasn't been noticed by apple yet?

It's possible that the "30% of all money" is a bit of misinformation; I can't find where Apple's app policies are enumerated.

I'd be interested in knowing and I have no doubt someone here has a good idea.