An external developer, Emanulele Fornaro, has created DriveCast for iPhone.
This app allows the synchronization of your iPhone with your Drivecast online library using the wireless networks (UMTS/wifi) without the needs to connect your device to a computer.
You can buy the application from the Apple Store:
Or get more info from the application webpage:
DriveCast has been developed thanks to the official Drivecast APIs, available for all developers. The API specification and documentation are available at: