Stair Calculator 2 is a fast, easy way to create a schedule of stair 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 calculations today. - Universal app allows use on both iPad, Mac and iPhone/iPod with single purchase. - Create an unlimited list of calculations that automatically save. - Solve rise, run, incline, headroom, stringer length, throat and more. - Calculate baluster spacing using the built-in spacing utility. - View a detailed diagram of the stairwell or the stringer that is to scale and zoomable. - Print directly from the app or save to your camera roll. - Change font size, arrow size, line width, and more to customize your drawing. - Work in either imperial or metric. - Built in construction calculator allows intermediate calculations to be performed within the app.