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From DANIEL RODRIGUEZ:
Calculator(iOS 7 HD ready) with memory functions, percentage, delete function and more. This calculator seems like real metal and let you do your work easier with its memory function You can see what is on the memory under the display, if the memory is empty nothing is presented under the display Use memory function is very easy just press MR to Record or Replace a number, and the number appears under he display with "M=" before. *To use the memory value just press "M" just like any other number, i.e. 345+M to add memory value and 345 or Mx345.65 to multiply 345.65 and the memory value. *To clean the memory just press "MC" *To delete Just a number press button