i41CX+ is an advanced programmable and expandable RPN scientific calculator with a virtual thermal printer/plotter and workstation-class CAS capabilities that is far beyond a mere replica of the original. In addition to being functionally equivalent to the world-renowned HP-41CX and providing access to its entire library of modules and programs, i41CX+ is enhanced with iOS and hardware features, keyboard overlays, rich set of import and export capabilities, traditional and upbeat diverse set of skins, complete color control, iCloud support, and much more.

The i41CX+ CAS is a full implementation of REDUCE. It's like having Mathematica or the computational engine of Wolfram Alpha in your pocket and, best of all, it runs natively so no internet connection is required. The CAS is fully programmable and provides the ability to reuse previous results in computations. Moreover, the CAS has full access to the calculator registers so it is possible to combine RPN programs with CAS programs.

This is the finest and most powerful scientific/engineering/financial calculator for iOS devices bar none.

• RPN logic with a 4 element deep memory stack
• 319 main and 600 extended memory registers
• Over 400 built-in functions, including over 100 functions created specifically for i41CX+
• Time, calendar, alarm, and stopwatch functions
• Four module ports provide access to HP-41 expansion pacs
• Rich set of functions and algorithms: numerical, mathematical, statistical, complex, matrix, numerical integration, curve fitting, solutions to equations, and much more
• Powerful, flexible, and programmable Computer Algebra System (CAS) supporting symbolic, arbitrary precision, scalar, vector and matrix algebra calculations, 2D/3D plotting, and much more
• Full-screen text editor with configurable font style and size, color scheme, a user configurable macro keyboard, and a numerical keyboard
• Access to the entire HP-41 library of solutions for science, mathematics, statistics, engineering, business, financial, surveying, medicine, real estate, and many other domains
• Programmable - virtually unlimited number of lines
• User definable keyboard
• Ability to operate the calculator using a Bluetooth keyboard
• Device integration: external display mirroring, copy and paste, in-app mail, system keyboard, GPS, accelerometer, digital compass, time and date synchronization, AirPrint, and much more
• Virtually unlimited data and program storage capacity using the device's flash memory for local storage
• Import/export data, programs, overlays, modules, etc. via the web, email, and iTunes file sharing
• iCloud syncing of files and preference settings
• iOS 8 Notification Center widget
• 43 available keyboard overlays and support for user created overlays
• Sound support including synthetic tones and interface sounds
• Support for calculator skins and optional mini stack display
• Adjustable calculator speed, sound volume, and display colors
• Usage & Examples table with usage tips and examples
• Quick Reference Guide of all built-in functions
• CAS Quick Reference with all built-in functions, operators, switches, and packages
• Beautiful and clean user interface

• Support for printing, plotting, graphics, and special characters
• User configurable and programmable print color
• Export printer output via email, clipboard, or AirPrint
• Ability to save a JPEG image of the paper roll to the device's photo album

A comprehensive FAQ and Mini-Manual are available at Please don't hesitate to use the "Contact Us" link there if you cannot find the answers or information that you seek. Thank you.


Version 7.4.7

• Bug and iOS 11 compatibility fixes.

Bewertungen und Rezensionen

5 von 5

7 Bewertungen

7 Bewertungen


Heinz Tödtemann

Bin nun seit fast 40 Jahren Besitzer eines HP-41cx mit dem ich noch heute arbeite. Ich bin daher von Ihrem i41cx-Apps begeistert. Alle Funtionen sind 100 % gleich. Einfach toll....
An de zahlreichen UPDATES ist zu erkennen, das dieses Produkt liebevoll gepflegt wird. Vielen Dank.
Ich arbeite zwar immer noch mit meinem HP-41cx - System aber die Apps ist einfach besser und umfangreicher als das Original geworden. Meine gesamten Programme laufen inzwischen hier. Noch einmal vielen Dank für die liebevolle Pflege der Apps.

Hammer App


Nachdem sich mein alter 41-cx leider 4 in sie ewigen Jagdgründe verabschieded hat hab ich mir die App geladen. Hut ab und Respekt, tolles Teil.
Habe mir für viel Geld auch einen 12c und 48GS gekauft. Laufen leider mit aktuellem iOS nicht mehr.
Danke an die Entwickler für die Umsetzung und auch das sie im Gegensatz zu anderen ihre HP App am Leben halten.

The real thing!


This is the best HP-41CX emulator I have seen so far. It is well integrated into iOS and my choice whenever I need a calculator. I bought the original HP-41CX when I went to university (had a HP-41C before). It pleases me to be able to use the calculator I liked the most on iOS. I am very thankful to the developer and the effort he put in this amazong project. Some developers at one point bring out a new release under a new name, so we have to pay again. I use this application for years and only paid once. Since I fear this application is only for those of us who used the real thing back then I think we need to get the developer motivated to continue working on this application. He could include a function to buy fresh batteries as in-app-purchase. So we could once or twice year pay for virtual fresh batteries to keep the developer happy. Hint: There could be different virtual qualities of batteries, having different prices.


Antonio Lagana
124.7 MB
Erfordert iOS 8.0 oder neuer. Kompatibel mit iPhone, iPad und iPod touch.
Kennzeichnung: 4+
© 2008-2017 AL Software
27,99 €


  • Familienfreigabe

    Wenn die Familienfreigabe aktiviert ist, können bis zu sechs Familienmitglieder diese App verwenden.

Mehr von diesem Entwickler

Das gefällt dir vielleicht auch