3D Functions Graph Plotter can render functions in 3D space. This free app can generate graphs to represent functions defined using a function in the form f(x, y) or parametric surfaces defined as x=fx(u, v), y=fy(u, v), z=fz(u, v) as well as spherical coordinates and cylindrical coordinates. The x and y or u and v ranges to use when graphing the function can be modified.