RPN-34 CE — The first photo-realistic HP-34C simulator for iOS

Version 1.3

RPN-34 CE is a photo-realistic simulation of Hewlett-Packard's third-generation scientific calculator HP-34C.

Released in 1979, the HP-34C was the high-end scientific member of the so-called "Spice" series. It was discontinued in 1983.

RPN-34 CE is a massively enhanced, yet fully compatible version of the HP-34C.



Tap the wrench symbol or double-tap the display to access the
settings screen:

iPhone X Screenshot:



Version History RPN-34 CE

1.3 – July 2, 2019
  • New:
  • • Long-press program listing to change font of description from proportional to non-proportional and vice versa.
  • • New program "Curve Fit Automatic" added

1.2 – Apr 6, 2019
  • New:
  • • Register I is now formatted in Register View for easy interpreting in ISG/DSE commands
  • • New program added: "Locating the Moon"

1.1 – Feb 5, 2019
  • New:
  • • Optional stack display (swipe display right/left)
  • • Cut and paste any number of program steps
  • • Set flags are shown as highlighted register numbers in Register View
  • • Flags are saved and loaded along with programs
  • • Select integration precision in Settings (Norm/High/Best)
  • • Warning dialog on deleting program memory or program files
  • • Improved reliability of comparisons
  • • Added two program pacs ("Student Engineering Applications" and "Surveying Applications")

  • Bug Fixes:
  • • In rare situations, executing Integrate or Solve from the keyboard would not stop correctly after the calculation
  • • Issues with branching via I-register

1.0 – January 9, 2019
  • First public version.


RPN-34 CE is available here:



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