It is a Multi-Function Calculator app that can be used for Free! Can be also Multiple-Calculations at the Same Time! Because it is equipped percent calculation and arithmetic operations is a function of basic calculator, and a memory function, it can also be used as an ordinary calculator. For Multiple-Calculations can be, can easily compare calculation the shop which is like, or money at the same time. Percentage Calculation is possible, so can be easily Calculate Tax, etc! The ability to chan