Simple, uncluttered, powerful. This calculator has no buttons because it's controlled by your keyboard, freeing up valuable screen space. What it lacks in clutter is made up for in features. You can resize the window, make it float above all windows, or make it full screen. Choose different color schemes. Ten memory registers save their contents when you quit the app. Perform date calculations. Record macros and speed up your work. For advanced users, features like RPN mode and fixed point display are just a keystroke away. A really awesome help window tells you what keys to use.

What’s New

Version 1.2.9

Minor calculation bug fixes.

Ratings and Reviews

4.5 out of 5
15 Ratings

15 Ratings

j%nml ,


This is a nice little calculator with lots of appealing features, including an RPN mode (the only way to go) and a resizable floating window that's always visible (a big deal if you’re using other apps at the same time). Only reason I gave it 4 stars instead of 5: you need to memorize a bunch of keyboard commands to use all the features. But they’re fairly intuitive, so once you use it for a while you’ll pick them up naturally. This app is worth the very modest price - especially if you want RPN and you appreciate minimal design.

Lotus954 ,


I downloaded half a dozen calculators before finding this one. Obviously, I wasn’t happy with any of them. This one is perfect. It does everything it needs to do without the bloat that so many other calculators throw in. It is perfectly and elegantly simple. Who knew that finding a calculator that kept a running total was so hard to find? This one does that. I also like that I can float it over everything so if I’m working on my checkbook and bank statements, I don’t have to keep opening the calculator…it’s right there where I need it. To the developers: Thank you so much. You are appreciated!!! To the rest of you, get this app!

EGS22 ,

Great RPN Calculator

Perfect for simple RPN calculations; works especially well with a numeric keypad. Love the option to show the stack and the float feature. Simple and intuitive to switch x and y and roll through the stack using the arrow keys. Please assign a single key stroke option for 'change sign’ such as the space bar.


National Spork LLC
891.5 KB

OS X 10.7 or later, 64-bit processor



Age Rating
Rated 4+
© 2013 Tod LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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