LeoStatistic is a comprehensive tool for statistical analysis and modeling of experimental and market data. Universal input from outside data sources: from text or database files; file type and edit in spreadsheet like control; copy/paste from spreadsheets applications like MS Excel or Access; extract curve in numerical form from image chart. Data manipulation procedures permit to create anew and modify existing variables using simple formulas or schemes. Syntax of formulas incorporates itself ability to use indexing variables that permit to create differential variables.