The App provides (1) a high-resolution auditory evaluation for 56 frequencies in the range between 55–7,040 Hz that can be carried out in the users’ home environment; and (2) individually organized, hearing-loss specific training sessions that help to improve auditory thresholds and speech intelligibility (supported languages: English, French, German, Spanish).

Single Tests
«Single Tests» are used to determine the users’ hearing threshold for a given frequency (tone) for either the left ear, the right ear, or both ears together. Single Tests are carried out by presenting the tone of the chosen frequency several times while successively adjusting intensity (loudness). The standard approach starts with the user-defined initial loudness (e.g., -25.5db) and reduces loudness in steps of -1.5db until the user is unable to detect any sound.