RPN-67 Pro

RPN-67 Pro

Vintage Programmable Calc

6 ratings
20 reviews
$4.99

Details

  • Released
  • Updated
  • March 1, 2013
  • April 9, 2026

Features

RPN-67 Pro screenshot #1 for iPad
RPN-67 Pro screenshot #2 for iPad
RPN-67 Pro screenshot #3 for iPad
RPN-67 Pro screenshot #4 for iPad
RPN-67 Pro screenshot #5 for iPad
RPN-67 Pro screenshot #6 for iPad
RPN-67 Pro screenshot #7 for iPad
RPN-67 Pro screenshot #8 for iPad
RPN-67 Pro screenshot #9 for iPad
RPN-67 Pro screenshot #10 for iPad
🖼️Get Icon
Icons↘︎

About

This app is a faithful simulation of a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run existing programs, manage virtual program cards, and even print listings, all on their iPad.

Virtual program and data cards
Virtual paper tape printer
Database-driven card manager
Save card collections to Mac/PC
Formatted program listings
Print listings via AirPrint
Live display of stack and registers
Show original description

What's New in RPN

7.5

April 9, 2026

• In the Card Manager ("Cards"), the green label fields of user cards may be edited in W/PRGM mode, with "Show Card Content" set to off. • Improved support of Silicon Macs.

More

User reviews

Excellent emulation

The pro version is just great - has a lot of extra cards with an extensive manual on each card’s functions, i.e. TVM calculation card etc. There are a lot of customisations available to the core HP 67 calculator. Thanks for the hard work of putting this all together, this seems like the only calculator [emulation] one would ever need. The calculator skin is also great, and the red display makes it authentic. Looking forward for future versions.
Show more

Back to 5 stars

Yay, well done. Portrait mode is back.

It seems to me that if you had to drop a mode, for the 67 it would have made more sense to drop landscape mode.
Anyhow, thanks so much for restoring it.

Response from developer

One star because of a single feature you're missing?? Blocking portrait mode was not an arbitrary decision. It was forced by a number of graphical issues showing up when running in iOS 13. In order to release an update supporting Dark Mode and the new file sharing features in time, portrait mode was disabled. Meanwhile, it has been fully restored, working better than ever. And to answer your question: I'm not on drugs and never will be.

Love It

I used the HP67 at college back in the 70s, this emulator is just like the real thing. Well done.

Best iPad Calculator

This developer is terrific. His apps are really great. The HP-67 is a good calulator made great by the extras added by this developer. The calendar functions are amazing and make it very much like the HP41 or 42s. The integrated share functions make it very easy to send a listing or a copy of the "card" created or a listing.
The developer's efforts are truly a labor of love!
There is a version of this app for the iPhone and the share feature makes it easy to copy a program developed on one device to the other device or to a Mac for backup...
Show more

No longer works

This worked beautifully until the iOS 8.4 update. Now the program closes as soon as you open it. The funny thing is, the free version still works perfectly! So until this is fixed, get the free one instead.

Developer apps

FAQ

What is RPN-67 Pro?

RPN-67 Pro is a complete simulation of the Hewlett-Packard HP-67 programmable calculator, designed for iPad. It brings the functionality of this 1970s professional tool to a modern device.

Does RPN-67 Pro have ads?

No, RPN-67 Pro is ad-free. It provides an uninterrupted user experience for its professional-grade calculator simulation.

What devices does RPN-67 Pro support?

RPN-67 Pro is exclusively available for iPad. It is optimized for the iPad's larger screen and processing capabilities.

How much does RPN-67 Pro cost?

RPN-67 Pro is a paid application, priced at $4.99. This one-time purchase grants access to its full suite of features.

Can I run existing HP-67 or HP-97 programs in RPN-67 Pro?

Yes, RPN-67 Pro allows you to paste existing HP-67 or HP-97 listings directly into the app and run them. It also supports hundreds of free program cards downloadable from their website.

How often is RPN-67 Pro updated?

RPN-67 Pro was last updated on March 3, 2026, indicating a commitment to ongoing development and support. Users can expect continued improvements and compatibility.

What are the advanced features of RPN-67 Pro?

Beyond basic emulation, RPN-67 Pro offers up to 999 program steps, 8 subroutine levels, 100 additional registers, complex numbers, and hyperbolic functions, making it a super-charged version of the original.

What is the user sentiment for RPN-67 Pro?

User reviews highlight RPN-67 Pro as 'beyond spectacular' with a 'perfect visual experience' and 'perfect emulation.' Users also praise its speed and ease of programming compared to the original device.