Ok. I love the fact that developers are giving us simple rpn calcs. The small two level stack display on left might be helpful, if it were not inverted from hp calculators (like 48) that display the newest stack entry on bottom. That single point is deal breaker for me. Uninstalling
Having used the HP28S for over 20 years, I've become so used to RPN entry that it is difficult to use a conventional calculator. I've used several RPN calculator apps, but always return to this one. My only complaint is that a flaw - either in the app or my phone - will sometimes display the answer as an incorrect decimal number instead of an integer.
Gotta love the simplicity I use RPNCalc when i need complex operations, but that is rare. Would be nice to have a way to switch to a fuller set of features.
Just a working RPN Working RPN calculator, with no wonky permission request or add space... love it!
Great basic RPN calculator with large buttons that make it easy and convenient to enter values.
Very simple and functions perfectly.
* bring back scientific on landscape
* larger font
* change C button to first clear entry, then one level of stack for each press, and on long press clear the whole works.