MoSync SDK 3.1 (available for download at http://www.mosync.com/sdk) has new functionality for managing in-app purchases – one of the most proven business models for developers to monetize their applications – on Android and iOS. The SDK also boasts extensive support for Microsoft’s Windows Phone 7 platform, enabling developers to use MoSync’s core libraries and application programming interfaces (APIs) to build native apps for Windows Phone 7 and providing web developers with access to the unique user experience offered by Windows Phone’s Metro UI (user interface) system. Read the full details here.