IT:AD:Fastspring

Accepts NZD currency

Subscription management

8.9% Per Transaction or 5.9% + $.95 is not exactly the cheapest.

Payments can be delivered to your Paypal account (which is maybe useful if you are in NZ, where they don't yet direct deposit).

It's a webpage process (optimised for Mobile as well, but still, not webAPI based).

But there's also a Mobile sdk for iPhone and iOS (Android?)

Not yet in NZ.