Experience a faithful simulation of the groundbreaking HP-65 programmable calculator on your iPad. This app offers virtual program and data cards, a powerful card manager, and includes 170 original HP programs to get you started.
4.6
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.
MoreRPN-65 Pro is a simulation of the Hewlett-Packard HP-65 programmable calculator, designed to run on iPads. It aims to replicate the functionality and experience of the original device.
RPN-65 Pro is a paid application, available for $3.99. This one-time purchase grants access to all its features.
No, RPN-65 Pro is ad-free. As a paid application, it does not contain any advertisements.
RPN-65 Pro is exclusively designed for iPads. It is not available on iPhones or other Apple devices.
The latest version, 4.6, was last updated on April 9, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support.
Yes, RPN-65 Pro functions as a standalone calculator simulation and does not require an internet connection to operate, allowing for offline use.
RPN-65 Pro offers four modes: original HP-65 simulation, high-speed original simulation, improved user interface with backstep and jump, and 'Super-65' with expanded program steps and registers.
User feedback has been positive, with MacBreak Weekly calling it 'A work of art. Fantastic!'. The app holds a 4.0-star rating from 4 ratings.
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