Medicine Men has been building mobile solutions for self-management since 2012 and has developed the Viduet platform for a better quality of life of chronically ill patients with e.g. COPD or heart failure. The Viduet platform can be applied in either primary, secondary or integrated care.The applications make intensive use of the newest technologies: like wireless measuring devices, smartphones, tablets and smartwatches. The past few years our team has gained a lot of experience with behavioural design, on the basis of which our systems have been adjusted better to the behaviour of the users.