RPN-55 app for iPhone and iPad

4.8 ( 858 ratings )

Utilities Productivity
Developer: AmeloConsulting

5.99 USD

Current version: 3.2.2, last update: 8 years ago
First release : 10 Jul 2012
App size: 1.23 Mb

A bit exact RPN emulator of the HP 55, an evolution of the famous HP 65, introduced by HP in 1975. It is a programmable RPN calculator with numerous built-in scientific functions. This application employs the same mathematical computation found in the original calculator.