The app will help coaches entering results fast and easy for a Yo-Yo test (It is also known as the 20-meter shuttle run test, beep test or bleep test among other names). The app is meant to be used by coaches working with athletes. The app should ease the task of creating and assign athletes to a Yo-Yo test and also help the Coach entering test results for a Yo-Yo test. It should be possible for a coach to do this in real-time, meaning while the Yo-Yo test is ongoing and having around 15 athletes doing the Yo-Yo test at the same time.