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?

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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.