Plus42 for Android - Download Free [Latest Version + MOD] 2025

Whats new in Plus42 v1.1.14

4 things about Plus42

1. 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.
2. 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.
3. Plus42 is an advanced scientific programmable calculator, based on Free42.
4. Free42 is a complete rewrite and contains no HP code whatsoever.

Release date: 2024-11-14
Current version: 1.1.14
File size: 10.34 MB
Developer: Thomas Okken

How to setup Plus42 APK:

APK (Android Package Kit) files are the raw files of an Android app. Learn how to install plus42.apk file on your phone in 4 Simple Steps:

Download the plus42.apk to your device using any of the download mirrors.
Allow 3rd Party (non playstore) apps on your device: Go to Menu » Settings » Security » . Click "Unknown Sources". You will be prompted to allow your browser or file manager to install APKs.
Locate the plus42.apk file and click to Install: Read all on-screen prompts and click "Yes" or "No" accordingly.
After installation, the Plus42 app will appear on the home screen of your device.

Is Plus42 APK Safe?

Yes. We provide some of the safest Apk download mirrors for getting the Plus42 apk.

Download Mirrors

Mirrors: Download for Android

On iTunes: $9.99 On iTunes

Reviews

Thanks for this app

I have been using free42 for long time and I am glad you are offering a premium version and I can contribute to the developer of a great app.

~ By Mist02

High precision and quality

This is a great calculator. Very precise. I didn't go through all functions but it's evident that it is made with talent and obsession. Excellent job!! This is the calculator I use all the time.

~ By LE2357

Amazing reinvented.

I own multiple copies of the HP 42S, the DM42, but unlike those machines, my Android is always in my pocket. I have completely uninstalled the default calculator app and use the Free42 application quite heavily. I was really glad to see an upgrade with a bigger screen, so that I have something that’s close to the DM42 in my pocket at all times. This, I tell my students, is the best calculator ever made by man or beast. Thanks, Thomas!

~ By akhan.a

Great RPN calculator!

The only thing an actual HP42 does better than this is the hardware buttons. If you don’t know what an RPN calculator is, take a few minutes to grasp the concept, give Free42 a try, and math may become a whole lot easier. Just when we thought Free42 couldn’t get any better this shows up. Well done, convenient, beautiful implementation, solid functionality. I use it every day. Thank you so much for these apps Thomas!

~ By Oohrah17

Lives in my Home Screen

This app goes above and beyond expectations. Very impressive work done to make this calculator what it is. Yes, it’s a bit nostalgic in terms of the looks, but this calculator is super useful! Lots of great loving care went into making this the best modern “HP RPN” calculator on the planet that’s not made by HP, but made by a developer who clearly puts forth passion in his work.

~ By DarkRadon