19. An Overview of In-App Billing APIs for Android
Developers can monetize their Android applications in a variety of ways. In addition to selling applications outright, developers can integrate billing APIs into their applications in order to sell specific content. In this chapter, we discuss some of the in-app billing APIs available to Android developers, how they might be used, and what some of their limitations are.
What Is In-App Billing?
The freemium business model—where apps are published free of charge but contain content for purchase—is perhaps the most popular way to monetize Android applications these days. Users are more likely to sample a free application, and if the content is sufficiently interesting, they are more likely to pay ...
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