The RPNcalc 11 is a full featured scientific RPN calculator.

All Features: at a glance:

• Display & Keyboard:
∙ Fixed number format
∙ Scientific number format
∙ Engineering number format
∙ Backspace

• Math:
∙ +, -, ×, ÷, %, 1/x, root, x^y, pi, ln, log, e, ...and many more
∙ Integer truncation and absolute value
∙ Trigonometric and inverse trigonometric functions
∙ Hyperbolic and inverse hyperbolic trigonometric functions
∙ Trigonometric modes (degrees, radians, grads)
∙ % change

• Statistical:
∙ Mean standard deviation of 2 variables
∙ Summation
∙ Random number generator
∙ Linear regression
∙ Correlation coefficient
∙ Factorial
∙ Gamma
∙ Combinations and permutations

• Scientific and Time:
∙ Polar and rectangular conversions
∙ Decimal hrs / hrs.min.sec. conversions

About RPN:
The Reverse Polish Notation is a mathematical notation in which operators follow their operands. It does not need any parentheses as long as each operator has a fixed number of operands.

What’s New

Version 2.1

- macOS Mojave support
- Miscellaneous bug fixes and stability improvements

Ratings and Reviews

dtw192 ,

Very Good Rendition of an 11C

This app works well and functionality is just what the old 11c delivered. It would be great if the copy and paste functions (menus and keyboard shortcuts) worked to copy/paste numbers from/to the X register. That way numbers could be easily brought in from another application and the result of a calculation could be copied and pasted into yet another application. As it stands, it is a pretty good app; this addition would make it great.

oldmitt ,

Hyp Trig Functions

The Hyperbolic Trig functions on RPNcalc11c (exactly like those on a "real" HP11C), ALWAYS treat the angle in radians REGARDLESS of the selected Trig Mode. This inconsistency can easily be accounted for while doing calculations but yields wildly erroneous results if one fails to do so. The normal Trig Functions work properly in the selected Trig Mode as should be.
bitPunch is to be commended for making this series of wonderful calculator apps available for those who don't have mobile devices.

tcw321 ,

seems to work ok, but screen is limited

Is there a way to show the history on the screen? One thing I like about my HP calculator is that it shows the buffer 4 lines deep. On a computer, I should have this option. In it's current state, I don't think it is worth $2.99.


bitPUNCH e.k.
473.7 KB

OS X 10.11 or later, 64-bit processor



Age Rating
Rated 4+
© bitPUNCH e.K. 2013-2019


  • Family Sharing

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

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