Inclusion Criteria:  All adults (>18 years, no age maximum) treated patients with GD will be eligible. Signed informed consent.  Exclusion Criteria:  Patients without access to either computer or mobiles phone. For this pilot study patients whose communication skills in Hebrew is not good enough to complete the study questionnaires and PROMs [the app platform will use a very simplified language, thus allowing patients with limited Hebrew to use the app] *for future use/study the platform will be translated to other languages, as needed.