Publisher's description:

A+ Calc is a scientific calculator with a multi-line edit display that shows all calculations and allows editing and recalculating equations. A+ Calc includes hexadecimal, statistics, and unit conversion tools, and calculation save and load capability. Trial use only applies to premium features, most features are available free of charge. View, edit and recalculate with new values and/or operators. Simple uncluttered user interface. Extensive error messages with easy error recovery. A+ Calc unit conversion, A+ Converter is a stand alone tool that allows user-defined conversions.