With this tool you can calculate how many tiles you will need to cover a roof or a certain area.Having on its home screen the main tiles of the trade: they are Roman, American, French, Portuguese,channel and fiber cement.Even if you dont have the tile you are going to use, you can enter the measurement of your tile and do the calculation normally.All areas are stored in the app in the history part, so you can review all areas at any time.Dont waste time, you who work in the field of civil construction, install it right now.Thank you all in advance and good work.