What's New

This version provides improved screen resolution when installed on iPhone 8 and iPhone 11 models.

App Description

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.

In addition to the four basic arithmetic operations, square root, 1/x, log, sin, cos, tan and +/-are available. Two special numbers pi, and e can be entered by tapping a button.

iPhone Screenshots

(click to enlarge)

Basic RPN Calculator screenshot 1

iPad Screenshots

(click to enlarge)

Basic RPN Calculator screenshot 2

App Changes

  • September 12, 2012 Initial release
  • December 17, 2013 New version 1.1
  • April 25, 2014 New version 1.2
  • June 13, 2019 New version 2.0
  • June 13, 2019 Price increase: FREE! -> $0.99
  • June 13, 2019 Price increase: FREE! -> $0.99
  • June 14, 2019 Price increase: FREE! -> $0.99
  • June 14, 2019 Price increase: FREE! -> $0.99
  • June 15, 2019 Price increase: FREE! -> $0.99
  • June 15, 2019 Price increase: FREE! -> $0.99
  • June 16, 2019 Price increase: FREE! -> $0.99
  • July 14, 2020 New version 3.0