The best
I love this app! Why can’t they make a similar app for Windows?
This is the RPN Calculator to Get
An old favorite, nay necessity, from my Palm days, I'm very happy to have this essential application for my iPod Touch. It works just like an old school HP Calculator, circa the HP-11 and 12 series, with the added bonus of an extended stack and scientific as well as financial functions. The original for the Palm was programable and there were several program suites that you can add on -- I hope these feature are forthcoming. However, given the excellent execution of this program, it's ease of use, and Creative Creek's very fine customer service, I do not hesitate giving this app 5 stars. Well done!
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Great RPN Calculator!
Combines scientific and financial functions in the traditional HP style
Best of the RPN calculators
Does all the scientific calculations and most common financial ones too. Works exactly like the old HP RPN calculators with no quirks. Available on iOS, Android, and OS X.
Love this calculator!
This is my daily go-to calculator. It's also my absolute favorite HP emulator! It does everything I need from a calculator. Great combination of functions! Anyone who used the older vintage HPs will appreciate this calculator. Thank you Dr. Thompson for keeping this app current!
18 Years Using This Calculator
I was surprised to see the subtle indication that my go to calculator app had been updated. It’s not the same as my collegiate HP-33E, but better.
Do any other apps have this quality and longevity? I doubt it. Never had a single problem with it. Now that it’s also MacOS compatible I can finally put my favorite calculator on my desktop too.
Do any other apps have this quality and longevity? I doubt it. Never had a single problem with it. Now that it’s also MacOS compatible I can finally put my favorite calculator on my desktop too.
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Absolutely the best
I've tried several RPN calculator emulators for the iPhone, and this is hands-down the best. It recreates the functions and "feel" of an HP calculator, but doesn't waste space with stupid pictures of the edges of a physical calculator, etc. Worth much more than they charge...
Wer den HP liebt
Ich habe die App täglich in Benutzung und liebe sie einfach.
Keine Probleme!
Keine Probleme!
Perfect RPN Calculator
Originale Umsetzung der HP RPN-Rechner.
Ich bin begeistert.
Danke für den einmalig guten und schnellen Support.
Ich bin begeistert.
Danke für den einmalig guten und schnellen Support.
Love this calculator!
This is my daily go-to calculator. It's also my absolute favorite HP emulator! It does everything I need from a calculator. Great combination of functions! Anyone who used the older vintage HPs will appreciate this calculator. Thank you Dr. Thompson for keeping this app current!
Awesome calculator!
I use this calculator on a daily basis and absolutely love it. I have been a fan of HP calculators since the 80’s and glad I found this app a number of years ago.
Superb
I’ve used RPN since my first HP calculator 50 years ago. This app is a superb duplication of the original and looks just like the original keyboard. Perfect for all my scientific needs.
Great calculator
Been using for many years. Has surpassed my HP calculator for most purposes, though the H-P works great. RPN is the only way to go for engineering calculations. Learn it and you’ll never touch an arithmetic calculator again j
My daily companion
There is no single day when I use this calculator. Easy to handle and the same look and feel as my old HP calculator.
Who is used to the unique UPN maths will find no better App.
Who is used to the unique UPN maths will find no better App.
Wow, this nice calculator is still alive 👍🏻
Thank you very much.
Love this calculator!
This is my daily go-to calculator. It's also my absolute favorite HP emulator! It does everything I need from a calculator. Great combination of functions!
Anyone who used the older vintage HPs will appreciate this calculator. Thank you Dr. Thompson for keeping this app current!
Anyone who used the older vintage HPs will appreciate this calculator. Thank you Dr. Thompson for keeping this app current!
Einwandfrei
Sehr guter originalgetreuer HP Emulator. Ich verwende ihn seit Jahren gerne als Ersatz für meinen alten HP-15C,
Really great RPN calculator
I have been using this calculator for years and found it flawless for a RPN calculator. Reverse Polish Notation (RPN) calculators take less keystrokes than an algebraic version to complete a series of calculations.
This calculator faithfully executes the HP look and feel for those wanting combined scientific and business functions in one app. I cannot praise this calculator enough.
This calculator faithfully executes the HP look and feel for those wanting combined scientific and business functions in one app. I cannot praise this calculator enough.
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Top et pensive
This appli is too expensive !
MathU RPN
Diese APP ist nicht mehr Wert als 5 Euro.
