This is an example version, Many times in the supervision of works I have had the need to make quick calculations of the materials to be used and I found that the phone is the most useful and comfortable tool to use so I developed this application Based on the knowledge acquired in the field and experience, this app calculates and estimates the most common construction materials during the work execution process, although it is necessary to have basic construction knowledge and with your own experiences you will be able to make a useful use of this tool that for me has been and will be the best tool in the field to perform quick calculations of construction materials during the execution of works.Atte. Arch. Roberto Godoy.Note. Calculations are approximate so I recommend using waste factors.