RPN Big Float Calculator vs x

Perhaps the most accurate calculator on the iPhone. Precision from 16-bit up to 100.000. Fast Calculation in RPN-Mode or direct formula input. Lots of functions up to elliptic integrals, theta-functions, gamma and log gamma. Built in constants for gamma, pi, Feigenbaum. Calculation mode for complex numbers, quaternions, integers and p-adic numbers. Nerdy functions with Klingon user-Interface.

x-Cal is an ergonomic scientific calculator, in both portrait and landscape orientations, using RPN (c) Great for professional and educational use, it allows to quickly develop an understanding of register operations and basic programming Features fixed, scientific or engineer number formats, trigonometric and hyperbolic calculations in radians, degrees or grades, basic statistical computations, linear correlations, combinations, etc. Swipe on the top result display area to view the arithmetic register stack, tap on the top to display other registers such as storage register, statistical registers and program steps Record programs such as a quadratic equation solver, or display graphs to visualize functions y = f(x) At any time look, copy and paste text style computations into e-Mails, notes, etc.