Patients who meet all of the following criteria are eligible for enrollment as study participants: - Males and females over the age of 40 years. - physician-diagnosed COPD classified as GOLD 2-3, C-D for at least 1 year. - Using rescue medications at home delivered by a metered-dose inhaler or MDI. - Speak, read, and understand English. - Able to understand study requirements and comply with study procedures. - Ability to operate a smartphone or tablet (for questionnaire and symptoms input).

Subjects who meet any of these criteria are not eligible for enrollment as study participants: - Physically disabled such that they are incapable of performing forced oscillometry test (for airway impedance measurement) - Physically disabled such that they are incapable of using metered-dose inhalers. - Suffer from any visual, hearing, or cognitive impairment that cannot be corrected enough to operate the CareCOPD devices properly. Mild/moderate vision loss and mild hearing loss may be included with appropriate corrective measures that do not affect the device usage. - Suffering from serious uncontrolled medical conditions that may interfere with study conduct. - Continuous home Oxygen use for greater than 16 hours/day. - Inability or unwillingness of the participant to give written informed consent. - Individuals who are not yet adults (infants, children, teenagers) - Pregnant women - Prisoners