For a long time, the diagnosis of voice disorders was based on subjective assessments by doctors and therapists. They assessed the voice based on their sense of hearing. This assessment is based on subjective perception and varies from person to person. A well-founded diagnosis on a subjective basis is therefore hardly possible. Nevertheless, this knowledge is of great importance in the evaluation of voice data. In order to train subjective perception, WEOVSYS offers apps in which the assessment of RBH values is trained.