Using In-App Billing

Android developers have numerous options when it comes to designing freemium applications. Most choose to use one of the several well respected services provided that offer libraries for handling secure in-app purchases. Many in-app billing services work only for applications published by specific providers.

Developers are responsible for managing the content they wish to sell to the user through the billing APIs. In-app billing is nontrivial to implement. There are third-party APIs to use, limitations to consider, security and export concerns, and usually substantial code to write—code that needs to be unique and private to your application to help avoid reverse engineering, piracy, and exploitation of your valuable content.