This study is evaluating the effectiveness of a dose counter for an inhaler device used to deliver medication to people diagnosed with asthma or COPD.

Inclusion Criteria:

• Written informed consent/assent
• General good health
• Asthma or COPD
• Capable of understanding the requirements, risks, and benefits of study participation.
• Able to demonstrate proper metered-dose inhaler use and technique.
• Other inclusion criteria apply

Exclusion Criteria:

• History of life-threatening asthma or COPD that is defined for this protocol as an asthma or COPD episode that required intubation and/or was associated with hypercapnia, respiratory arrest or hypoxic seizures.
• Culture-documented or suspected bacterial or viral infection of the upper or lower respiratory tract, sinus, or middle ear that is not resolved within 2 weeks of Screening Visit.
• Is being treated with a long-acting β2-agonist alone.
• Is currently being treated with Ventolin HFA.
• Any asthma or COPD exacerbation requiring oral corticosteroids within 2 months of Screening Visit. A subject must not have had any hospitalization for asthma or COPD within 4 months prior to Screening Visit.
• Historical or current evidence of a clinically significant non-asthmatic acute or chronic condition.
• Uncontrolled hypertension
• History of any adverse reaction to any component of the HFA-MDI formulation.
• Participation in any investigational drug study within the 30 days preceding the Screening Visit.
• Other exclusion criteria apply.

People diagnosed with asthma or Chronic Obstructive Pulmonary Disease (also known as COPD, emphysema or chronic bronchitis)