The aim of this study was to develop a technological tool in the form of a mobile application that provides functionalities for the easy calculation of reproductive and productive efficiency indices. This tool aims to assist breeders. technicians. and students of agricultural sciences in decision-making for the challenges faced in cattle production systems. https://www.diegojavierfares.com/top-offer-Refletor-Projetor-LED-100W-Bivolt-SLIM-OUROLUX-super-grab/