Aepryus Calculator is an attractive scientific RPN calculator.

Aepryus Calculator can stay on top of your other applications, so that your calculations stay in view. It can also be shrunk down to the size of the two number display, allowing you to see most of the rest of your screen.

The button layout is designed to mirror your keyboard. The display is fully customizable and all 10 numbers of the stack can be viewed at one time. The calculator works in decimal, hexadecimal, and octal modes. It also includes a memory function which allows you to push up to nine numbers off to the side and assign each of them keyboard keys for quick retrieval.