A normal calculator, which is showing the entered formula and its result, instead of only showing the last value.

It currently support two modes, standard and advanced. The standard mode is aimed at primary education; it only has the basic operations (addition, subtraction, multiplication and division). The advanced mode adds square root, exponentiation and nesting.

If you would like to learn how to add the Calculator (and other apps) as general tools throughout the inquiry Space phases, visit the Support Page's section on How to create an ILS, or use this direct link.