The performance of kicks in a football game is crucial for the result. Therefore, it has exceptional importance in teaching and coaching in youth football schools. In addition, there is a continuing need for rapid and effective football kick testing. With the development of technology, applications have been introduced for testing the sports performance through a mobile phone. If they show good measurement properties, their availability and simplicity could greatly facilitate coaching for the coaches. The aim of this study was to determine the reliability and validity of the protocol for testing the velocity, precision and quality of football kicks with the myKicks mobile application at young football players. The group of 37 young football players divided in three age categories, younger pioneers ages 11 and 12, older pioneers ages 13 and 14, and cadets ages 15 and 16, subjected to the protocol of performing football kicks on two occasions, the first test and the repeated test. Within one test, participants performed a series of five kicks on the goal from a distance of 11.5 meters. For the purpose of evaluating the testing reliability of the myKicks application, the results of young football players in the first test and the retest were compared. The validity of the myKicks mobile application was evaluated by comparing the results of myKicks testing among the three chronologically and qualitatively different categories, as well as by linking its results to the scientific rank method. Based on the data analyzes performed, the evaluated application can be considered as a reliable and valid instrument for measuring ball velocity in all three categories. However, the implemented protocol by the mentioned instrument, shows inadequate level of reliability and low validity to measure the accuracy and quality of football kicks, especially at older pioneers. The use of the myKicks application within the framework of the evaluated protocol may be recommended fot the purpose of testing the ball velocity at young football players. More research is needed to determine the posibility for applying the application within the protocol for measuring the accuracy and quality of football kicks.