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ClassicHPCalc app for iPhone and iPad


4.4 ( 4384 ratings )
Utilities
Developer: AmeloConsulting
14.99 USD
Current version: 3.8.1, last update: 7 years ago
First release : 15 Oct 2010
App size: 1.38 Mb

An all-in-one bit exact RPN emulator for the four classic RPN calculators introduced in the 70s. This includes the first pocket calculator (model 35), the first financial calculator (model 80), the first scientific calculator (model 45) and the first programmable calculator (model 65/55). This application employs the same mathematical computation found in the original calculators, providing high precision calculations. Switching between models is simply achieved by touching the calculator screen.