Fig. 1

EXACT@home study design. The EXACT@home study consists of 7 visits for participants in the intervention arm and 6 visits for those in the control arm. The systematic assessment program for the intervention arm spans visits 1 to 3 and lasts for 6 weeks. From visit 1 to visit 4 (12 weeks), patients in the intervention arm are monitored at home using a portable spirometer, FeNO meter (for a subgroup), and an activity tracker (Corsano). Additionally, they use a second activity tracker (MoveMonitor) for one week between visits 2 and 3. From visit 1 to visit 7 (12 months), they also use the PDHE and a digital inhaler with the application providing feedback and reminders. In the control arm, patients use the PDHE and digital inhaler without the application for 12 months