i41CX

RPN Calc

Published by: Antonio Lagana
Downloads
Revenue

Description

i41CX is the same powerful advanced programmable RPN scientific calculator as the highly acclaimed i41CX+ but without the latter’s incredibly advanced capabilities such as the printer, expansion, CAS, etc. It is functionally equivalent to the world-renowned HP-41CX and inherits all of the i41CX+ usability features including extremely responsive and animated key clicks, audible key feedback sounds, optimally spaced keys for accurate input, traditional and upbeat modern diverse set of skins, etc.
If you are looking for a powerful programmable RPN scientific calculator but don’t need all of the capabilities of i41CX+ then i41CX is for you. And best of all, if you ever decide that you need the more advanced capabilities of i41CX+ you can enable them using secure in-app purchases right within the app!
FEATURES:
• RPN logic with a 4 element deep memory stack
• 319 main and 124 extended memory registers
• Over 300 built-in functions, including nearly 100 functions created specifically for i41CX
• Time, calendar, alarm, and stopwatch functions
• Rich set of functions and algorithms: numerical, mathematical, statistical, and much more
• 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 - Over 2000 lines
• User definable keyboard
• Ability to operate the calculator using a Bluetooth keyboard
• Device integration: external display mirroring, copy and paste, GPS, accelerometer, digital compass, time and date synchronization, and much more
• iOS 8 Notification Center widget
• Sound support including synthetic tones and interface sounds
• Support for calculator skins and optional mini stack display
• Adjustable sound volume and display colors
• Usage & Examples table with usage tips and examples
• Quick reference guide of all built-in functions
• Beautiful and clean user interface
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A comprehensive FAQ is available at http://alsoftiphone.com/i41CX. Please don't hesitate to use the "Contact Us" link there if you cannot find the answers or information that you seek. Thank you.
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In-Apps

CAS Upgrade
$6.99
Printer Upgrade
$3.99
Overlays Upgrade
$2.99
i41CX+ Features Upgrade
$17.99

Screenshots

i41CX FAQ

  • Is i41CX free?

    Yes, i41CX is free to download, however it contains in-app purchases or subscription offerings.

  • Is i41CX legit?

    ✅ The i41CX app appears to be high-quality and legitimate. Users are very satisfied.

    Thanks for the vote

  • How much does i41CX cost?

    i41CX has several in-app purchases/subscriptions, the average in-app price is $7.99.

  • What is i41CX revenue?

    To get estimated revenue of i41CX app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.

User Rating

5 out of 5

1 ratings in Chile

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Ratings History

i41CX Reviews

Very useful and realistic keyboard

mario.yanez on

Chile

Fantastic calc, very realistic compared to my HP 41 CX .. still operative… I use this anytime; thanks to developer!!! La uso en forma permanente, soy ingeniero civil e investigador y en mi escritorio aún tengo mi HP41CX original…. Un tesoro fantástica simpleza del RPN…

So good I retired my HP-41CV!

nickname 314159-2653590 on

United States

This is a great program! The interface is so well designed and uses all of the available screen space so that the numbers are readable for this old timer. In the HP tradition, this app exceeds expectations in both quality and performance.

Masterful reincarnation of the original !

BLouChip Consulting on

United States

Well done! $/feature/functionality it’s like buying a hand held super computer. Holy cow! Not to mention throw-back value for boomer generation :)

This is a great app!

W8WCA on

United States

I have been using HP calculators since I bought a HP45 in about 1973 With HP mostly out of the Scientific RPN calculator area this app fills the need! Makes me miss my HP41CV I had (that died after many years of heavy use). Super customer service as well.

Latest Update Caused Problems - Now Fixed!

cb_cb1 on

United States

UPDATE - The display issue from v7.6.1 is fixed - via 7.6.2. The calc is now back to the great tool that it has been for quite a while and I look forward to continuing to use it for another few years. Thanks. PRIOR - The most recent update may have made for compatibility with the latest iOS (I haven't tried it yet on my iPhone and likely won't based on this experience) but it no longer works on my iPad that has an older iOS. The background graphics no longer scale up to the screen size so the touch points for the calc do not agree with the visual indications for the buttons. Avoid this version. Wait until it is fixed if you have an iPad with an older iOS.

Mazel Tov!

Weyland-Yutani on

United States

I wore out my HP-41 calculator but it was the thing that brought me back to programming after a nauseating experience with FORTRAN 77 in 1981. I wrote nearly 200 programs on that calculator. It got me through engineering school, taking the PE, working on the Hubble, B2, and 7x7s. I’m glad to have it back, even just as a calculator. I’m curious: Can I still write a subroutine to cause the calculator to automatically shut down when I turn it on using flag 11?

The REAL thing...

First Review My Files Free on

United States

Latest speed enhancement is phenomenal! Thank you. Now if we can have it always “ON” when it comes up, then it would be perfect! Is there a setting that would have turn on automatically when it starts?

LOVE IT and no buying N size batteries

Big Screen us BA on

United States

Love it love the way the case looks 35 years using one now have it on me

The Best RPN Calculator.

DRGWMaine on

United States

For all the reasons HP RPN scientific calculators are used for engineering, this calculator is simply the best. All the features of the best HP calculators, with improvements. Outstanding.

Love it!

Nick D. Name on

United States

I LOVE the way it reproduces the look as well as the action of the calculator. It just wouldn’t be the same without emulating the case, the ports everything. That is for this final but critical extra touch.

Store Rankings

Ranking History
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Category Rankings
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Top Paid
119
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Top Paid
140

i41CX Competitors

Name
RPN-65 SD
First programmable calculator!
RPN-34 CE
Legendary classic calculator
WP 34s
Vintage-45
Vintage Calculator (1973)
RLM-15CX
Advance Scientific Calculator
RPN 28x Calc
Math can be fun.
RPN-70 SD
Very rare vintage calculator
RPN-35 SD
First scientific calculator!
RPN-45 SD
Calculadora clásica (1973)
RPN-45 HD
Vintage Calculator (1973)

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i41CX Revenue

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App Info

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