MASKAllergy Diaryis an app developed by MACVIA-France to compare phenotypic characteristics of rhinitis and asthma multi-morbidity in adults and old age people using validated ICT tools. It works closely with POLLAR (Impact of Air POLLution on Asthma and Rhinitis, EIT Health), and collaborates with professional and patient organizations in the field of allergy and airway diseases. MASK proposes real-life care pathways (ICPs) centred around the patient with rhinitis and/or asthma multimorbidity.