The ultimate calculator: rotateyour phone between a basic and a very capable scientific one. The basic phone has normal and financial calculations: VAT,currency, fixed decimals, scroll-able multi-line display. The scientific one has seven modes: normal, engineering, scientific, fixed point, complex, programmer’s, statistics; 32 true decimal places; root, exponential, trigonometric, hyperbolic, complex, statistical functions and many more. Compatible with S^3 / Anna / Belle Smart Phones.