Calcuccino from Cambridge Coders is a programmers' calculator for the iPhone that includes all the functions you would expect for programming, engineering, and scientific use. Features include signed, ...

The calculator on OS X is pretty simple at first glance, but there are two additional calculators built into that you might not realize are there: a scientific calculator and a programmer calculator.

Are you nerdy enough for this? It is a replica of an HP-16C Programmer's Calculator. If you are into RPN and bit twiddling, this calculator is literally designed for you and you should immediately buy ...