LeoStatistic is fast, portable, user-friendly software application for graphic presentation and statistical analysis of experimental data. It can perform distribution of one variable with comparison T and Poisson probability; two arguments distribution with 3D presentation; curve fitting with constructor like or user defined interface; signal revealing with special emphasizing on chromatogram case; 3D presentation of function of two arguments with plane and parabolic approximation; multi-arguments function regression and near neighbors method and other methods.