SNCalc is an aid for complicated calculations. SNCalc has multiple mathematical functions and can be used with different numerations. It contains a filled analyzer which can be used for calculating complicated expressions. It has 12 customizable buttons that allow you to enter often used operations. Additional modules include: graph function painting (2D-Graph)\; calculating of a polynomial's radicals of any power\; operating functions with dates\; and a converter of various physical quantities. There are financial functions and formated lead-in and lead-out of numbers. The program runs as a convienient icon in the System Tray area of the Windows taskbar.