Would using UiWebView (for payment) in an iPhone app be rejected? App is a web service

For in-app purchases that affects the iPhone app itself, it'll definitely be rejected as Apple would force you to use their in-app purchase API.

But what if the app complements a web service that I'm building that isn't only made for iO开发者_开发技巧S.

It would seem weird that subscribers would have to go through two separate gateways for payment.

In other words, how does a web service passes app store approval for an iPhone version of the web app?

Noone currently knows for sure. Steve Jobs has said that the subscription rules were meant "for publishing apps only, not SaaS apps": http://www.businessinsider.com/steve-jobs-email-subscriptions-2011-2 But the guidelines are kind of vague.