A device application includes business logic, and device-resident presentation and logic.
Mobile business objects help form the business logic for mobile applications. A mobile business object (MBO) is derived from a data source (such as a database server, Web service, or SAP® server). When grouped in projects, MBOs allow mobile applications to be deployed to an Unwired Server and referenced in mobile devices (clients).
Once you have developed MBOs and deployed them to Unwired Server, you add device-resident presentation and logic to the device application. You build a native client in the Xcode IDE using Objective-C and Generated Object API code, and by programmatically binding to the iOS Client Object API.