If you’re looking for the Swiss Army knife calculator, then look no further than Panoramic Software’s Calc Pro. The calculator is officially replacing 1-Calc from OmegaOne as my default favorite calculator. Calc Pro offers a unit converter, time converter, statistics calculator, financial calculator, scientific calculator, standard calculator, graphing calculator, and world currencies conversion with downloadable exchange rates for accurate conversions.

I am not sure how the calculator will work on devices without hardware navigation pads (either a directional pad or a trackpad like the Omnia, Epix, or Saga) as you have to use the directional pad to switch between the various different calculators so Touch HD users may be out of luck at this point.

Calc Pro is one of the more expensive Windows Mobile titltes at nearly $25, but you do get a lot if you need all the extra features and functionality in one calculator.