Don't learn any specific syntax, just drag and drop! DragNCalc eases the creation of complex formulas and evaluates them! The key features are : -Easily create complex formulas and save them for later use. -Use as many formulas as you need. -Support for Undo/Redo. -Change the value of your inputs with an immediate update of the results. -Formulas can depend on other formulas. -Create Real and Boolean expressions. -Documents can also be read and modified using the macOS version of DragNCalc DragNCalc is best used with a pencil or a stylus Visit the DragNCalc Web site for regularly updated tutorials.