iPhone

FREE in the App Store

What is it about?

The classic Hewlett Packard RPN (Reverse Polish Notation) calculators.

App Details

Version

2.1

Rating

(3)

Size

2Mb

Genre

Utilities Productivity

Last updated

July 31, 2025

Release date

November 13, 2024

More info

App Store Description

The classic Hewlett Packard RPN (Reverse Polish Notation) calculators.
- HP-35, HP-45. First pocket scientific calculators (1972). HP-21. 2nd gen of the HP-35 (1975)
- ЭЛЕКТРОНИКА MK 61. Soviet RPN Calculator (USSR - Ukraine) late 70's

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