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Janus Calculator app for iPhone and iPad


4.2 ( 5952 ratings )
Productivity Finance
Developer: Geoffrey Domm
Free
Current version: 2.2, last update: 1 year ago
First release : 26 May 2010
App size: 1.34 Mb

Two-sided calculator. Side A uses Standard Notation, Side B uses Reverse Polish Notation. Both calculators are programmable, include various finance and scientific functions, and the values of 45 physical constants. Also includes a Black-Scholes option calculator, including calculation of implied values for each of the inputs.