Expanding Your Application Using the In-App Purchase Support

One of the most exciting new features in iPhone OS 3 for developers is the addition of in-app purchase support. Using it, you can leverage the power of the built-in App Store purchase system to allow the user to purchase additional content for your application. This content can be in the form of additional levels, additional features, and so forth. This capability enables new kinds of business models to be developed around iPhone OS and the App Store. In this chapter, you’re going to take a look at how to work with the in-app purchase system.