Occay! RPN Desktop Calculator

Among other attributes, the computer is used when it comes to determining values with great accuracy. There are various types of calculators you can use, and even Windows comes with a pretty powerful tool in this regard. If you're looking for something new though, Occay! RPN Desktop Calculator might easily meet your demands.

Can be used on the go

One of the application's main advantages is that there's no setup involved. This means that you can take it for a spin as soon as download is done, and you can deploy it on a thumb drive in case you want to use it on other computers than your own. Another consequence of portability here is that system registry entries remain intact during runtime.
The application comes with a custom-made layout bundled inside a classic window frame. Accommodation doesn't take much time if you ever seen a calculator. A numerical pad is used for value input, with various different operators on the sides for available functions. All the way to the top is the value display.

Good, but far from being a pro

You find that the application puts a decent variety of operations at your disposal, but not a great variety. You benefit from add, subtract, multiply, divide, square root, and power. There's no memory slot for temporarily storing values, so you need to be careful the whole way to obtain the desired result.
What's more, the input method might leave you scratching your head for a while, because it's slightly different from regular calculators. For instance, you first need to write the value you want to process, and then select the operator, and not the other way around. Saving results is only possible if you manually write it down somewhere else, since it can't be sent to clipboard or saved to file.

In conclusion

Taking everything into consideration, we can state that Occay! RPN Desktop Calculator is a pretty lightweight calculator for basic operations. If you manage to get acquainted to the odd input method, then there aren't any other problems to keep you from obtaining the desired result.