Free42 Apk

Latest version 3.2b

04 Feb 2025

Apk Infos

Version	3.2b
Rating	4.9/5, based on 3,131 votes
Size‎	7.4 MB
Requires Android	Android 4.4+ (KitKat)
Author's Notes	HP-42S Simulator: advanced scientific programmable RPN calculator.

About Free42 APK

Table Of Contents

Application description
Latest updates
How to install Free42 APK?
Questions & Answers
Reviews from verified install users

Description

Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.
It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.
All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.

Latest updates

What's new in version 3.2b

Now recognizing comment delimiters '@' and ';' for program pasting.

More accurate complex ASIN/ASINH.

How to install Free42 APK on Android phone or tablet?

Download Free42 APK file from ApkClean, then follow these steps:

Update Phone Settings

Go to your phone Settings page
Tap Security or Applications (varies with device)
Check the Unknown Sources box
Confirm with OK

Go to Downloads

Open Downloads on your device by going to My Files or Files
Tap the APK file you downloaded (com.thomasokken.free42-v3.2b-ApkClean.apk)
Tap Install when prompted, the APK file you downloaded will be installed on your device.

Older Versions

3.2b (179)	7.4 MB
3.1.11 (173)	7.4 MB
3.1.10 (172)	7.3 MB
3.1.9 (171)	7.3 MB
3.1.8b (170)	7.3 MB

Questions & Answers

Q: What is an APK File?

A: Just like Windows (PC) systems use an .exe file for installing software, Android does the same. An APK file is the file format used for installing software on the Android operating system.

Q: If I install an APK from this website, will I be able to update the app from the Play Store?

A: Yes, absolutely. The Play Store installs APKs it downloads from Google's servers, and sideloading from a site like ApkClean.net goes through a very similar process, except you're the one performing the downloading and initiating the installation (sideloading).
As soon as the Play Store finds a version of the app newer than the one you've sideloaded, it will commence an update.

Q: Why ApkClean.net can guarantee APK 100% safe?

A: Whenever someone wants to download an APK file from ApkClean.net, we'll check the corresponding APK file on Google Play and allow user download it directly (of course, we'll cache it on our server). If the APK file does not exist on Google Play, we'll search it in our cache.

Q: What are Android App permissions?

A: Apps require access to certain systems within your device. When you install an application, you are notified of all of the permissions required to run that application.

Don't hesitate to contact us if you have any questions or concerns.

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User's Reivew

5 ★This is staggeringly amazing. I cannot say enough how amazing it is that this doesn't have ads. That would completely destroy the aesthetic and the developer seems to get that. Hopefully there is a way we can donate to support development!

5 ★This is the coolest gadget going! I never owned an HP. I was surprised to find that this simply-designed version came later (1988). I can imagine that programming it was for those with plenty of patience! ;) But, IMO, its minimalism makes it the nicest if the HP series.

5 ★Great app. Works unlike any other calculator. And RPN! More than that, the integration of complex numbers built into this calculator is much better than most calculators. You can get logarithms, powers, roots etc. of complex numbers. Thank you Mr. Okken.

5 ★Very good and complete RPN calculator. Would be even better if the app contained a low-resolution and a high-resolution picture of the calculator, and automatically chose which one to use.

5 ★I really like this app but the skin function seems to not work at all on my phone. It allows me to select one, but doesn't actually apply it. If this is fixed it will definitely be 5 stars.

5 ★This is just as good as the real 42s calculator. The app works great on every phone I've installed it on. It keeps RPN alive and it is convenient to always have a real calculator with me.

5 ★No doubt this is the best free (RPN calc) apps available. I put inside old formulas written for 41CV (oil and gas formulas) and they are working just superb !! just wish that I had this apps earlier. Many many thanks to Thomas Okken.

5 ★For a calculator app that optimizes keystrokes, this is the one. For the classic HP calculator experience in an app, start here. If you want an RPN calculator, you won't find a consistent, faster, smaller, scientific, featured calculator cheaper. If you want graphing or algebraic or textbook entry, keep looking.

1 ★GUI changed radically! Like when M$ introduced the idiotic "ribbon" GUI. I was a long-time HP calc user, and one thing that appealed to me about this app was the familiar look & feel. Now it's gone -- bad move by developer, I'm ditching it & trying out alternatives.

5 ★This is just like the HP-42S I used to own! Except it has more memory, is much faster, and always there on my phone. Oh and did I mention the built-in printer with virtual paper, and the ability to save my work as a file? My college calculator would be envious!

5 ★Unfortunately, real HP42s have become expensive, often-stolen collector's items. Free42 allows me to have with me all the time, the same calculator I went through school with, while the real thing stays safely at home.

5 ★On my Samsung I held the bottom right button to get the menu, with the latest version I long tap the lcd display area for the menu...This should be noted per instructions. lucky I discovered it on my own.

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