Triple Therapy Convenience by the Use of One or Multiple Inhalers and Digital Support in Chronic Obstructive Pulmonary Disease

Inclusion Criteria: * Clinical diagnosis of COPD for at least 1 year before the screening visit * Aged 40 years and older * An indication for triple therapy according to the treating physician (following the GOLD guideline 2021(2)). Could be step-up from dual therapy or currently receiving triple therapy (both MITT and SITT). * Owner of mobile device compatible with e-device app with access to internet (Android or iOS) * Willing to provide written informed consent * Current or ex-smoker Exclusion Criteria: * Inability to comply with study procedures or with study treatment * Insufficiently skilled in the Dutch language to be able to read and understand the app. Help by third party (family members) is allowed * Asthma as the predominant disease according to the investigator's opinion, a past history of asthma is allowed * Use of e-health application for COPD in the past six months * Patients with any other therapy that could interfere with the study drugs (according to the investigator's opinion) * Use of nebulized bronchodilators, for example via pari boy * Pregnant or lactating women and all women physiologically capable of becoming pregnant unless they have highly effective contraceptive * Patients mentally or legally incapacitated, or patients accommodated in an establishment as a result of an official or judicial order * Patients without the capability to complete the questionnaires