The Oracle ATG Web Commerce Reference Store iOS Universal Application (CRS-IUA) is an extension of Oracle ATG Web Commerce Reference Store which provides an extension to the existing Commerce Reference Store backend in the form of a new Oracle ATG Web Commerce server module. This module is a concrete example of how you can leverage Oracle ATG Web Commerce REST Web Services to make data available to a client application. It also provides an example of a client in the form of an iOS Universal Application that consumes data provided by this server module.

An iOS universal application is a single application that is optimized for iPhone, iPod touch, and iPad devices, but creating it requires more effort than creating an app for a single device. For example, since each device has different screen sizes, much of your window, view, and view controller code for iPad will be different from code written for iPhone and iPod touch.

CRS-IUA also provides an Objective-C REST client that encapsulates the server invocations made from the iOS client. This encapsulation hides many of apps inherent complexities from the implementer.