A system and method for an extendable software interface includes a software architecture for use in a mobile device having a processor and a memory device. The software architecture includes a set of first-order controller software instructions configured to interface the application program with a first-order data model, and a first-order data object stored in the memory device in the form of the first-order data model. The first-order data object includes a second-order data object. A second-order set of controller software instructions configured to interact with the second-order data object is also included in the software architecture.