Is the rule still that if you allow in-app purchase or subscription then it must be sold through the App Store? You could circumvent this by distributing the so

Is the rule still that if you allow in-app purchase or subscription then it must be sold through the App Store? You could circumvent this by distributing the software via the app store and then must authenticate before any of the functionality is usable. Amazon Instant Video and Netflix apps do this I think presumably so they don't have to pay 30% of their subscriber fees to Apple.