Agility is a very important component in sports activities. Almost every sport requires agility as a differentiator for everyone's physical skills. Various agility instruments have been created such as Side Step Test, Illinois Agility Run, Shuttle Run Test, Zig Zag Test, T-Test, Agility Cone Drill, Arrowhead Drill, 20 Yard Agility, Balsom Agility Test, and others (www.topendsport.com). Some of the agility test instruments above are instruments that have been tested and developed in various countries. The weakness in conventional side step test implementation with observations using the eyes is when the teste does no movement whether the feet have crossed the left side or the right side. The method used in this research is Research and Development Sources of data in this study were obtained from athletes in the form of treatment tests and measurement of agility side step tests based on motion sensors. Side step test is a form of agility test that aims to measure agility (where the sideways movement is changed in the opposite direction of motion). With the existence of the side step test based on the motion sensor based, it is expected to help facilitate the implementation of the test to be more effective and the results are more valid. In addition this side step test tool is also in accordance with advances in digital technology so that it is more relevant.