This graphical user interface was designed as a tool for evaluation of custom design of experiment. This design uses 3D grid of 41 experiments. Variables must be numerical - with minimum and maximum value to be used in the test. After entering the values of response variable it can be used to evaluate effect of three variables using N-way ANOVA. Implemented approximation/extrapolation routines can be used to graphically display data using one of three supported (4D) graphs.