About Yo-Yo Intermittent Recovery Test App This application was developed with the aim of making it easier for sports practitioners to perform physical tests using the Yo-Yo Intermittent Recovery Test. In this application there are 2 kinds of Yo-Yo Intermittent Recovery Test, namely Level 1 and 2. Level 1 is easier than level 2 because level 1 is given to beginner athletes while level 2 is for professional or elite athletes. Application Features: 1. Equipped with Yo-Yo Intermittent Recovery