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I use [Free42](https://thomasokken.com/free42/ https://thomasokken.com/free42/) on all my platforms. Launches in an instant and has RPN.
by mbirth 6y ago
I use [Free42](https://thomasokken.com/free42/ https://thomasokken.com/free42/) on all my platforms. Launches in an instant and has RPN.
- mshroyer 6y agoFree42 is my favorite calculator on Windows, especially since I've long used HP's physical calculators. (Droid48 is also great if you're on Android.) But I still prefer PCalc on the Mac, because it's rather cumbersome to use a push-button calculator UI on a desktop computer with a mouse, and PCalc fits perfectly into the Mac user interface.
- yonrg 6y agofree42 is available for android as well