In-app Subscriptions Now a Part of Android via Google Play

The Android team introduced subscription billing to the Google Play store today, giving developers another way to monetize their apps. Going forward, developers can build in interval payment systems for premium content, bundled in-app products, magazine subscriptions, etc. and have Google Play handle the entire process. As a consumer, this doesn’t really affect you until one of your favorite app developers introduces some type of recurring product that they would like to charge you for.

Via:  Android Developers