2021-11-18
Outstanding Calculator
I had the “real” HP41C when I was at Uni 40 years ago. Still today it is the best, especially with RPN. Having this as such a well developed and supported App is an absolute Godsend ! Very well done.
Updating
iPhone Screenshots
iPad Screenshots
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.
What's New in Version 7.6.19
• Fixed bug introduced in 7.6.18
Seller
Name
Antonio Lagana
Information
Developer
Categories
Version
7.6.19
Size
389.5 MB
Game Center
No
VPP Device Licensing
Yes
Rating
Rated: 4+
Compatibility
iOS 9.0 or later
Devices
iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2nd generation), iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone SE (3rd generation), iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, iPhone 17e, iPad (5th Generation) Wi-Fi, iPad (5th Generation) Wi-Fi + Cellular, iPad (6th generation) Wi-Fi, iPad (6th generation) Wi-Fi + Cellular, iPad Pro, iPad Pro (Cellular), iPad Pro (9.7-inch), iPad Pro (9.7-inch) (Cellular), iPad Pro 12.9-inch (2nd generation), iPad Pro 12.9-inch (2nd generation) Wi-Fi + Cellular, iPad Pro (10.5-inch), iPad Pro (10.5-inch) Wi-Fi + Cellular, iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro 12.9-inch (3rd generation), iPad Pro 12.9-inch (3rd generation) Wi-Fi + Cellular, iPad Air, iPad Air (Cellular), iPad Air 2, iPad Air 2 (Cellular), iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPad mini Retina, iPad mini Retina (Cellular), iPad mini 3, iPad mini 3 (Cellular), iPad mini 4, iPad mini 4 (Cellular), iPad mini (5th Generation), iPad mini (5th Generation) Wi-Fi + Cellular, iPad (7th generation) Wi-Fi + Cellular, iPad Pro 11-inch (2nd generation), iPad Pro 11-inch (2nd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (4th generation), iPad Pro 12.9-inch (4th generation) Wi-Fi + Cellular, iPad Air (4th Generation) (Wi-Fi), iPad Air (4th Generation) (Wi-Fi + Cellular), iPad (8th generation) Wi-Fi, iPad (8th generation) Wi-Fi + Cellular, iPad Pro 11-inch (3rd generation), iPad Pro 11-inch (3rd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (5th Generation), iPad Pro 12.9-inch (5th Generation) Wi-Fi + Cellular, iPad (9th Generation), iPad (9th Generation) Wi-Fi + Cellular, iPad mini (6th Generation), iPad mini (6th Generation) Wi-Fi + Cellular, iPad Air (5th generation), iPad Air (5th generation) Wi-Fi + Cellular, iPad Pro 11-inch (4th generation), iPad Pro 11-inch (4th generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (6th generation), iPad Pro 12.9-inch (6th generation) Wi-Fi + Cellular, iPad (10th generation), iPad (10th generation) Wi-Fi + Cellular, iPad Air 11-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi + Cellular, iPad Pro 11-inch (M4) Wi-Fi, iPad Pro 11-inch (M4) Wi-Fi + Cellular, iPad Pro 13-inch (M4) Wi-Fi, iPad Pro 13-inch (M4) Wi-Fi + Cellular, iPad mini (A17 Pro) Wi-Fi, iPad mini (A17 Pro) Wi-Fi + Cellular, iPad (A16) Wi-Fi, iPad (A16) Wi-Fi + Cellular, iPad Air 11-inch (M3) Wi-Fi, iPad Air 11-inch (M3) Wi-Fi + Cellular, iPad Air 13-inch (M3) Wi-Fi, iPad Air 13-inch (M3) Wi-Fi + Cellular, iPad Pro 11-inch (M5) Wi-Fi, iPad Pro 11-inch (M5) Wi-Fi + Cellular, iPad Pro 13-inch (M5) Wi-Fi, iPad Pro 13-inch (M5) Wi-Fi + Cellular, iPad Air 11-inch (M4) Wi-Fi, iPad Air 11-inch (M4) Wi-Fi + Cellular, iPad Air 13-inch (M4) Wi-Fi, iPad Air 13-inch (M4) Wi-Fi + Cellular, iPod touch (6th Generation), iPod touch (7th generation)
Languages
English
App Store: Customer Ratings
Ratings & Reviews
5.0 of 5 (5 Ratings)
App Store: Customer Reviews
2020-11-27
So good and realistic
It feels so good to be to use my old HP41C again. Had one in Elec Eng university course and have missed it ever since. Well done to the developer and thanks for keeping it maintained.
2018-04-25
i41CX
I have used this app since it was released. My days studying engineering at Uni introduced me to the ways of RPN when Hewlett Packard first released this iconic scientific/engineering range of calculators.
This app reminds me so vividly of the numerous times that the calculator was in my possession and it has been revived for me on my iPhone and iPad. It is a stellar tool that is reliable, aesthetically extremely pleasing and above all else, translates to the Apple platform, exactly what I experienced using the real product made by HP!
I note with interest and agree also, that the price for the privilege of enabling a number of significant features is a testament to the developer. To make available wonderful add-ons that fully utilise the most powerful and useful mechanisms available for all users and especially so for engineers and professionals wanting to keep alive this unique style of computing technology in the palm of your hand - all at a reasonable and value-packed pricing structure. Well done!!
2016-01-30
Really good.
Great find. I use it all the time.
2015-04-30
Latest version has bugs please fix
Have been using this calculator for a few years and it has been great. Am having problems using it on iPad Air lately with calculator hanging and not accepting key inputs. Limits usability as I can not rely on answers. Please fix
2011-11-03
Fantastic
This is a superb reproduction of an HP41CX. I still own the genuine original article, but the convenience of having an exact, full-functional replica on my iPhone and iPad is fantastic. Best of all, you can download all of the plug-in modules that HP originally sold for the calculator, plus a heap of third party modules to give the calculator lots of extra functionality. If there is only one calculator app that you ever purchase for your iPhone/iPad, this should be it.
2009-06-30
i41CX - the best
RPN calculators seem to have fallen seriously out of favour! Against all logic it would seem as really they are a far more efficient way of calculating than on a 'normal' calculator. I can't imagine trying to do complex calculations with multiple nested brackets etc. RPN really is the best method and the 41CX must be one of the best calculators ever made - bar none. Of course you could get a brand name HP RPN calculator.... (but not a HP41 as it turns out) but crikey!!! their prices are outrageous! Get this one before these guys wake up and raise the price!
Highly recommended..