INSPIRERS\_RCT is a pilot randomized, multicenter superiority clinical trial regarding the effect of a mobile app together with usual care (experimental group) in comparison to usual care alone (control group) in adolescents and adults with persistent asthma. The study includes two face-to-face visits (initial visit and at 3 months), and 3 telephone interviews (1 week, 1 month and 4 months), implemented in 32 primary (General Practice) and secondary care centers (Allergy, Pediatrics, Pulmonology) in Portugal.