RedCrab Calculator is a mathematics software with fullscreen editor for the free placement of algebraic formulas on the worksheet in mathematical notation. Results can be displayed in different numeric formats and in diagrams. Images and texts can be inserted.

The mathematical expressions are not typed in a typical command line, but can be enter in an editor window similar to a piece of paper. The calculator display the result either under or next to the expression. The handling is easier than conventional calculators.

RedCrab supports the entry of complex algebraic equations with fractions, square roots, exponents, etc. for technical and scientific applications.