https://developers.google.com/webmasters/ajax-craw...
habrahabr.ru/post/187008
https://prerender.io
Apps using IAP to purchase physical goods or goods and services used outside of the App will be rejected
Apps that unlock or enable additional features or functionality with mechanisms other than the App Store will be rejected
Apps utilizing a system other than the In-App Purchase API (IAP) to purchase content, functionality, or services in an App will be rejected
Apps offering subscriptions must do so using IAP, Apple will share the same 70/30 revenue split with developers for these purchases, as set forth in the Program License Agreement
Apps that link to external mechanisms for purchases or subscriptions to be used in the App, such as a "buy" button that goes to a web site to purchase a digital book, will be rejected
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