Pocket 15C SE Scientific Calculator is a fully functioning calculator for your pocket PC. It can be viewed in traditional portrait or in landscape mode.
It features all the complex mathematical tools you will expect from a scientific calculator, like advanced maths, trigonometric modes, statistics and scientific conversions.
It works perfectly, has a memory and some programmability - so if you use a scientific calculator this is a great way to save on devices!
The only downside to this is it's shareware. You can use it for 14 days before registration is necessary. If you already own a scientific calculator, $20 will seem a bit expensive.
Overall a costly, but good scientific calculator for your phone