Calculator Pro is a simple calculator app for Windows 8 tablets and PCs that includes both basic and scientific calculators.  To access the basic calculator on a tablet, use the tablet’s portrait mode, for scientific, use landscape mode.

On Windows 8 PCs, the calculator is available in scientific mode only.  Scientific calculators include functions such as pi, sine, cosine, and more. Calculator Pro works on non touch screen Windows 8 computers, but to take advantage of the full features, it is better to have a touch screen.

Calculator Pro looks almost exactly like the calculator you would find on the iPhone or iPad with the exception of some color changes on the individual keys. The paid version of Calculator Pro offers additional themes including High Tech, Doodle, or Classic.  There is also a history bar that helps you remember complex calculations.

The user interface is simple and easy to use.  The numbers are big and easy to read with adequate color contrast for the visually impaired and for preventing eye strain.  The themes offer white on black or black on white color combinations. For functional purposes  Calculator Pro does the job well.  For those who are looking for additional skins or bells and whistles, there really isn’t a whole lot of choice at this point.

From what I see in the app description, Calculator Pro appears to be designed primarily for the tablet.  It isn’t totally clear whether it is available for Windows 8 phones.  That would be handy for those who don’t want to carry their tablet around everywhere.

It would be cool if Calculator Pro eventually had graphing calculator capabilities.  That would probably be a stretch, but an all in one calculator app would be very useful tool  to have.