A Basic RPN Calculator for your iPhone ...

This easy to use basic RPN (Reverse Polish Notation) calculator is perfect for students and others who are new to the use of the RPN method for entering calculations.

Features and Functions:

  • Standard Arithmetic (x, ÷, + -)
  • SIN, COS and Tan
  • Square Root, Inverse and Log
  • Pi and Euler's Number Entry
  • Clear, Backspace, Enter Keys

Reverse Polish notation (RPN) is a type of mathematical notation that is different from algrebraic notation. In RPN each operator follows all of its operands. The use of parentheses is not need in RPN calculations. One advantage of RPN is that the operators appear in the order required for a computation.


To find the sum of 23 and 34 press the follow keys:

2, 3, enter, 3,4 enter, +

To find the anwer to this problem:

(25 x 4) + 300

Enter this sequence:

300, enter, 4, enter, 25, x, +

  • Easy to use
  • Large Key
  • Extra Large Enter Key
RPN Calculator is now available at the Apple iTunes Store.