Voltage Drop Calc is a fast, easy way to create a schedule of voltage drop calculations for any size of job or just to perform a single calculation on the fly. Put your pencil down and start making professional, consistent calculation today. - Universal app allows use on both iPad, and iPhone/iPod with single purchase. - Create an unlimited list of calculations that automatically save. - Export your results to a spreadsheet for formatting or printing. - Solve for distance in feet or meters. - Solve for voltage drop in either voltage or percentage. - Solve for wire size including derating. - Built in construction calculator allows intermediate calculations to be performed within the app.