WellBe! is a smartphone app developed according to the principles of Positive Psychology, which aims to allow users to develop personal resources and use techniques that can help them manage their stress. WellBe! allows you to monitor stress levels and intervene in a personalized way to ensure better psychological well-being. WellBe! guides users on two paths of their choice (“Calm” or “Energy”), in which daily self-help exercises are proposed. Wellbe! exercises have been chosen on the basis of their proven effectiveness in the scientific literature.