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RPN-65 Pro

World's first pocket computer

World's first pocket computer

RPN-65 Pro

by CuVee Software
RPN-65 Pro
RPN-65 Pro
RPN-65 Pro

What is it about?

World's first pocket computer! Now running on your iPad.

RPN-65 Pro

App Details

Productivity Utilities
Last updated
February 18, 2022
Release date
September 3, 2015
More info

App Screenshots

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App Store Description

World's first pocket computer! Now running on your iPad.

RPN-65 Pro is the first complete simulation of Hewlett-Packard's stunning HP-65 programmable calculator for iOS. Produced from 1974 to 1977 at an initial price of $795 (that's more than $4,000 today!), the HP-65 was a breakthrough. Not only was it programmable, it also contained a motorized magnetic card reader - and still fit into Bill Hewlett's shirt pocket.

Experience this revolutionary calculator on your iPad. With 170 original HP programs included with RPN-65 Pro, you can get started right away.

"A work of art. Fantastic!" (MacBreak Weekly, episode 572)


• Virtual program and data cards
• Virtual paper tape printer supports AirPrint
• Powerful database-driven card manager
• Create, delete, label, and organize a virtually unlimited number of cards
• Sharing: e-mail, AirDrop, Dropbox, copy, paste, print
• Paste existing HP-65 listings into RPN-65 and run them
• "Live" display of stack, memory registers, program counter, flags
• Reads data cards created by RPN-67 Pro and RPN-97 Pro
• Supports external hardware keyboard

Run RPN-65 Pro in any of 4 modes:

1 - Just like the original HP-65
2 - Same, but at high speed
3 - Includes user-interface improvements, like backstep key and jump to any program step
4 - "Super-65" with 999 program steps, 120 labels, 120 registers, nested subroutines, and much more

For details, free program downloads, calculator handbook and much more, visit the RPN-65 website:

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