iPad Screenshots


RPN Calculus is a scientific RPN Calculator for the Apple iPad.

RPN Calculus provides basic arithmetic operations as well as advanced mathematic operations like trigonometric, hyperbolic or logarithmic functions. The calculator app provides an unlimited, well, limited by system resources, amount of memory space for values.

RPN Calculus performs calculations with a precision of up to 15 digits and supports a number range from -1E127 to 1E127. It's smallest presentable number is 1E-128.

RPN Calculus offers a clean and simple layout, very common if you have used scientific RPN calculators before.

RPN Calculus has a build in constant values database. The database contains over 120 scientific constants of different categories like e.g. Mathematics, Physics or Astronomy. Since the constants database is user extendable, you can add constant values that you are may be missing in the default set of constants.

RPN Calculus can print out your values on the stack and the memory. Remark: Printing is only available on iOS 4.3 or newer.

What’s New

Version 1.7

* Bug fixes for iOS 8+
* 64 Bit Version
* Requires iOS 8 or higher

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

rcarlana ,

Very good

This is the best RPN calculator available in APP Store. Very clean, easy to use and with 5 row stack. This is not 5 stars because I would like the keyboard keys were a little bit smaller and the display a little bit larger (with larger numbers).
If there were a Solver it would be perfect.

jlundell ,


Calculators are a crowded field. This is a very clean, elegant example; I keep it around with PCalc, which has the advantage of running on iPhone and in portrait mode on iPad.

The new color scheme is IMO a small step backward. Could we please have a setting for the original one? Or perhaps a compromise: the new scheme, but color-on-gray for the red & blue keys; they're just a little too up-front.

App Privacy

The developer, Thomas Braun, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Thomas Braun
12.2 MB

Requires iOS 8.0 or later. Compatible with iPad.



Age Rating


  • Family Sharing

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

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