This app is a function plotter for your phone. You can easily enter a function with a special keyboard and then the app will plot the graph and show you the basic results of a curve sketching. I want to create a small and clear app which gives you a fast overview of the function. Additionally to normal functions the app also supports functions with complex numbers, functions in a three-dimensional space, functions in a four-dimensional space, functions in parametric equation, functions in a polar coordinate system, functions in a spherical coordinate system and functions in a cylindrical coordinate system. New in version 3.1: - New function type xyz(u,v) - Changes in the implementation of frac This app is also available for tablets, notebooks and desktops with Windows 8 in a lot of countries. Have fun.