The AviationPVT App is design as an PVT (Psychomotor Vigilance Test) test for accessing people’s fatigue level and vigilance. It contains two parts. First, people have to complete several questionnaires to indicate their subjective fatigue level, sleepiness level and current moods. In the second stage, they will complete a three-minute PVT test. The response time and errors made during the process will be collected as indicators to their actual (objective) fatigue level.