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MathU RPN Calc

By Creative Creek, LLC

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MathU RPN is an advanced scientific and fiancial calculator designed in the spirit of classic HP calculators. MathU RPN is based on the Reverse Polish Notation (RPN) entry system and combines more than 96 functions to create a calculator that meets the needs of professionals who use a calculator every day.

MathU RPN was created by a Ph.D from M.I.T. who is a MATLAB toolbox author and has 15 years of experience creating calculators for mobile devices. Dr. Clay M. Thompson of Creative Creek has harnessed the computational power of the iPhone to produce an accurate and high performance calculator.

General Features
- IEEE double precision accuracy (16 digits)
- High performance fast computations
- 20 storage registers
- 5 financial registers
- 16 high stack (switchable to 4)
- Supports international number separators
- Switch between portrait and landscape keypads
- Quick access to the preference and on-line manual

Scientific Features
- Full set of trigonometric functions
- Full set of logarithmic and power functions
- Statistics functions
- Polar and rectangular conversions
- Repeated computations

Mortgage and Loan Features
- Time value of Money functions
- Compute mortgage and loan terms
- Solve for payments and interest rates
- Solve for IRR and NPV
- Date functions

Computer Science Features
- Number bases (HEX, OCT, DEC, BIN)
- Bitwise logical operations
- Masking and shifting functions
- Support for a wordsizes up to 48 bits
- Modular arithmetic

MathU RPN 3.0 has been reformatted to fit on the iPhone 6 and iPhone 6 Plus and iPad. In addition, a new stack and register view has been added.

MathU RPN 3.0 a great programmer's calculator. The A-F keys are available right up front for easy entry in HEX mode and there are many functions for working with integers.

MathU RPN 3.0 is also a better financial calculator. There are new functions for computing mortgage amortization and cash flow computations like IRR and NPV, as well as functions for working with dates. Many of the existing financial functions have been extended to handle odd periods (conforming to the same conventions as the HP-12C). In addition, on tall devices (like the iPhone 5 or higher), the financial registers are displayed on the keypad.

The scientific side of MathU RPN has also been improved by adding functions for linear regression as well as computing the percent of total.

In particular, improvements in this update include:

o A two or four line display option so you can see more of the stack.

o Visible financial registers

o Support for iOS 8 iPhone 5, iPhone 6, iPhone 6 Plus.

o New iPad interface that maintains its orientation during device rotation.

o New stack and register display accessible via [RCL] [RCL]

MathU 3.0 supports iOS 5.1.1 or higher (including iOS 8).

For more info (including the users manual)
go to or use the built-in quick reference.

What's New in Version 3.0.2

New in MathU RPN 3.0 are:

o A two or four line display option so you can see more of the stack.

o Visible financial registers

o Support for iPhone 5, iPhone 6, iPhone 6 Plus.

o New iPad interface that maintains its orientation during device rotation.

o New stack and register display accessible via [RCL] [RCL]

o Bug fix for issues on iOS 8.

o Bug fix (v3.0.2) to remove X: label from the portrait display on iPhone 3 and iPhone 4.

MathU RPN 3.0 supports iOS 5.1.1 or higher (including iOS 8).


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iPad Screenshot 1
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Customer Reviews

Good start and okay update!! Please, fix a few things.

I really appreciate the update. I wish it was done sooner, so I didn't have to buy the other RPN calculators I already bought. This was my favorite. I'm taking 3 stars off because I have a few requests that if like to ask you to look at that are key!

I don't always want to see 2 or 4 stacks. It is helpful at times, but at other times, I'd like to disable that in portrait view. Is there a setting I just cannot find?

Can you work on buttons' resolution, as they are pretty pixilated. Can you use a bitmap type icon that will keep its resolution on a HD screen like my iPhone 6 Plus?

Finally, can the landscape view be a bit useful of the iPhone 6 Plus' landscape to avoid the crunched view that it currently has. You made your other calculator take advantage of the iPhone 6 Plus! Why not this one?

Thank you, again, for a great update!!

Love this calculator!!

Best standard HP emulator I've ever used. All the functionality you would expect from an HP scientific and financial calculator.

This is my primary calculator. Had MathU calculators since my PalmOS days. They have always been robust and reliable.

Great! More please.

This simulation is so good – closest thing to my venerable & beloved 11C.

The new stack display features in v3.0 are nice but I wish there was an option to display just the "x" register like in v2.2.

MathU RPN Calc
View In iTunes
This app is designed for both iPhone and iPad
  • $19.99
  • Category: Finance
  • Updated:
  • Version: 3.0.2
  • Size: 6.3 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 5.1.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

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