Abstract
Recently, a mobile app (Allergy Diary, now MASK-air® freely available on Google Play and the Apple app store) was used to collect data on patients with allergic rhinitis (AR),1, 2 evidencing the usefulness of this tool for assessing patient behavior in AR. Among other features, the app includes visual analog scale (VAS) measures for general, nasal, ocular, and asthma symptoms and daily medication intake.The present prospective study aims to validate this app for the control of AR, comparing it to a written questionnaire.