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Last updated on: 2026-06-23
App Store Apps > Utilities > Plus42
Plus42 icon

Plus42

1.3.15
Thomas Okken
4.88
78 reviews
$9.99

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About Plus42

Plus42 is an overall app developed by Thomas Okken.

Download Statistics

User Ratings

Plus42 is rated 4.88 out of 5 stars. The rating is based on 78 ratings.

App Information

Plus42 costs $9.99 to download. The APK download size is 11.45 MB. The latest version available is 1.3.15. The last update was on May 5, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play April 2022.

Description
Plus42 is an advanced scientific programmable calculator, based on Free42. Free42, in turn, is a complete re-implementation of the HP-42S scientific programmable RPN calculator, which was made from 1988 until 1995 by Hewlett-Packard. Free42 is a complete rewrite and contains no HP code whatsoever.

Plus42 builds on Free42 and adds: Algebraic expressions modeled after those used on the HP-27S and HP-17B/19B; attached units and unit conversions modeled after those used on the HP-48/49/50 series; directories for more organized storage of programs and variables; a larger display, with 8 rows and 22 columns (131x64 pixels) by default, which the user may resize at will; time value of money and amortization schedules; and two-dimensional plotting of functions, with ability to zoom and pan, and find integrals and roots from points in the plot.
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More data about Plus42

Price $9.99
Rating 4.88 based on 78 ratings
Ranking Not ranked
Version 1.3.15
App download size 11.5 MB
Suitable for Everyone

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Changelog of Plus42

No changelog data

Developer information for Thomas Okken

Thomas Okken

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App Store Rankings for Plus42

This app is not ranked

Technologies used by Plus42

RPN-67 SD icon RPN-67 SD
RPN-25 CE icon RPN-25 CE
HP 15c Calculator icon HP 15c Calculator
Halcyon Calc icon Halcyon Calc
RLM-11CX icon RLM-11CX
GO-29 SciRPN icon GO-29 SciRPN
Halcyon Calc Lite icon Halcyon Calc Lite
RCL-57 icon RCL-57

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