Currency Converter

Ok so I finished the technology overview.  Now I'm reading a brief tutorial of how to make a Currency Converter.  It goes over the basics of using XCode and Interface Builder, which is Apple's program to make windows and the user interface in an application.  I've started making the very basics of an application by setting up a window with Interface Builder.  So far I havn't used any Objective-C or code because I am just working with the interface.  It shouldn't take too long to finish the Currency Converter and then I'll have something that actually functions as an application.  It seems like the Apple tools are very useful and comprehensive so I don't actually have to do too much coding to make a simple application.  Most of it is visually made.  For instance, to make a text field object that is the result of a conversion done in another class, I don't have to write any code, but simply do a visual drag and drop of a method that connects the results of the class to the selected object.