Do you have an iPhone? I have an iPod Touch. Do you use vectors? Do you think RPN calculators are the bomb? Here is a RPN calculator for the iPhone that supports vector notation. VCalc by Silicon Prairie Ventures Inc. Oh - it is free. Here is a screen shot.
I played with it some, the only thing that would be cool would be a landscape mode.

Rhett Allain is an Associate Professor of Physics at Southeastern Louisiana University. He
enjoys teaching and talking about physics. Sometimes he takes things apart and can't
put them back together.
Comments
Nice. I will add this to my collection of free or cheap iTouch calculators and converters.
Vector Calculator (for about a buck) is also good. It is not RPN but it is graphical. You might also look at Vector Addition Calculator.
Posted by: Greg Laden | March 13, 2010 8:26 PM
This isn't a iPod app (it's for Mac). But it isn't a "looks like a real calculator" calculator.
http://www.acqualia.com/soulver/
Posted by: davep | March 13, 2010 9:19 PM