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xyztCalc is the Zen of RPN (TM), or Reverse Polish Notation calculator great for students, scientists, engineers and professionals.

The idea behind this app is simplicity:

1.) Only basic functions which you use 99.97% of the time.

2.) Keep the buttons nice and big, thumb operable.

3.) Show all four X, Y, Z, and T registers.

This calculator emulates the behavior of the beloved HP-41CV/CX models and includes the basic functions of these timeless classics.

The display is localized for international numeric formats and will display those with respect to the local region in the general settings of the iPhone.

Enhanced number formats, persistence, and scientific notation is included in the new version.

Special thanks to both glyFX and app-bits for their great icon libraries.

What's New in Version 1.1.5

Corrected Error handling for inverse trig functions.

iPhone Screenshots

xyztCalc iPhone Screenshot 1
xyztCalc iPhone Screenshot 2

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Rated 2/5 based on 2 customer reviews.


0/5 stars


The keys are comfortable for someone with impaired vision, but this calculator's operations are simply too
limited to be worth the steep price.

a bit too low, however. Make it a 6.

4/5 stars


need key click sound.
yzt display can be smaller - i like the way i41cx+ handles that -- all on one row.

i'd like to see swap, drop, rot up and rot down on the first screen.


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The information may be outdated (2011-03-27 20:58:49). For actual information go to iTunes

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