Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download Calc41C: An HP41 Calculator for the iPhone by Watmough Software, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

Calc41C: An HP41 Calculator for the iPhone

By Watmough Software

Open iTunes to buy and download apps.


Calc41C emulates the venerable and much respected HP41C calculator.


● Continuous memory, across closing the app,
● Numeric entry,
● Alphanumeric entry for functions and program labels,
● Numeric rounding,
● Transcendental functions,
● Trigonometric functions,
● Conversion between degrees, radians, grads,
● Conversion between hours minutes seconds and decimal hours,
● Polar/Rectangular coordinate conversions,
● Logarithmic and exponential functions,
● Basic statistical functions including mean and std deviation,
● Decimal/octal conversion,
● Program entry and editing,
● User assignable keyboard for built-in functions or programs

Manuals and Help

On-line manuals for the HP41C that are applicable to Calc41C can be found by searching the web for 'HP41C manual'.

Of course, actual printed manuals are also applicable, and may sometimes be obtained through auction sites or locally.


Calc41C is compatible with the iPhone and iPod Touch. Key-click will only be available over headphones on 1st generation iPod Touch models.

Sound (BEEP and TONE) are not emulated, though a key-click may be toggled by touching the status bar.

What's New in Version 1.2.1

● Tidied up keyboard
● Fixed iPhone 6s+ launch image

iPhone Screenshot

iPhone Screenshot 1

Customer Reviews


Finally!! Love this app. I've used the hp41 since it was first introduced. Love reverse polish notation. Glad it's now available for my phone!

Calc41C: An HP41 Calculator for the iPhone
View in iTunes
  • $4.99
  • Category: Utilities
  • Updated:
  • Version: 1.2.1
  • Size: 3.3 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
All Versions: