This study shows the results obtained after the application of augmented reality-AR in the learning of descriptive geometry in elementary level students. The use of Mobile-D methodology facilitated the rapid development of mobile applications with augmented reality called Geobook. The statistical sample involved two sections in 6th-grade elementary school students from a public school in Lima city, where the experimental group improved by 82.18% with respect to the learning levels of the control group. It is concluded that the use of an AR-based mobile application significantly enhances learning in three aspects of descriptive geometry, included in the experimental and test dimensions.