a simple RPN calculator for Mac OS X

SimpleRPN is a project I did to learn Cocoa programming on Mac OS X.  It is my first objective C program and my first experiment with Cocoa  programming, so the source may not be very elegant in places.  I had some trouble finding a lot of good Cocoa programming examples, so I'm making the source code for SimpleRPN available to whoever wants it.  Learn from it, add features, or just use it as your desktop calculator.

Here is a partial screen shot of the calculator.

This is a screen shot of the calculator.

Download SimpleRPN