1-Calc: The Best Calculator for Windows Mobile Pocket PC

I have 1-Calc installed on my newly flashed HTC Wizard/Cingular 8125 (Windows Mobile 6 Professional Edition) and it is inarguably many many times better than the default calculator program that came with any Windows Mobile OS. It is easy to use with the currency converter function with auto rate grab. It also features as a full scientific calculator, unit converter and tip calculator. Now just key in the amount on the bill and the number in your party and it'll spit out the tip per person according to the percentage you set (default is 15%).