Inclusion Criteria:  Patients 8 to <19 years of age with a diagnosis of asthma as ICD-9 code 493 or ICD-10 code J45 seen in the allergy clinic at CHLA who have an albuterol rescue inhaler already prescribed and access to a personal smartphone will be eligible for recruitment.  Exclusion Criteria:  Patients unable to use device, unable to use albuterol (i.e. must use levalbuterol) or Age < 4 (ProAir® Digihaler only approved for Subjects 4 years and older). Patients with other chronic lung disease besides asthma or other significant comorbidities that could affect lung function/asthma (e.g. significant heart defects, immunodeficiency, cystic fibrosis, etc).