The Pocket iOS SDK by Pocket can interact with the API to save URLs of users' preferred books and media. Installation instructions explain how to download the SDK, add the Pocket SDK to a new project, obtain a consumer key, add the URL scheme, and configure. After installation, developers will be able to make requests to save URLs.
Mobile commerce is a huge business opportunity because, at least in the United States, there is not much infrastructure to support it. That's why mobile platform company Appcelerator recently announced its integration with the PayPal API. Now iPhone, Android and iPad developers using the paid version of the company's Titanium framework also get the ability to conduct mobile commerce.