"Pastor INTA" is an APP (it is an abbreviation of the English word application, an app is a program, but with special characteristics) whose objective is to allow the user linked to grazing animal production, to make estimates related to how much surface expressed in square meters to offer per day to the group of animals in question. It should be noted that this application can be used to estimate grazing area for any animal species that feeds on grazing (dairy cows, steers, calves, sheep, goats, etc.) and any pasture species.