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c-41 is a programmable RPN calculator based on HP 41CV and the Card Reader.

What's New

Version 5.1:
  • This new release extends the functionality to OS X 10.6 and with it a 30-day trial period is allowed to write custom programs, output them, and load module files.
  • Toggle between the normal and alpha mask, to visualize the shifted alpha keys;
  • Load custom masks;
  • Open, write, drag graphics to a new auxiliar window, and save or export it (rtfd) for more...


OS X 10.5 and later.

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Current Version (5.x)


Downloads 4,500
Version Downloads 826
License Demo
Date 25 Oct 2010
Platform OS X / Intel 32
Price $5.00
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