Inclusion Criteria:

• Clinical diagnostic testing via laboratory or home-based sleep study indicates diagnosis of obstructive sleep apnea.
• Currently use an appropriate Apple (iOS9 or higher) or Android (4.2 or higher) smartphone device.
• Able to read and understand English.
• Prescribed continuous or auto-titrated PAP treatment for obstructive sleep apnea.
• Stroke diagnosis with stroke event occurring within 12 months of referral to Center for Sleep Medicine.
• Functional and cognitive ability to manage smartphone application and PAP device with minimal to no assistance.
• Agree to using a smartphone application and wearable wrist sensor.

Exclusion Criteria: 

• Communication or cognitive impairments that limit ability to read and/or follow directions.
• Currently participating in other lifestyle programs (e.g., active, formal weight loss program or research study; smoking cessation program, etc.).
• Has lost 10lb or 4.5kg or more over the past 4 weeks.
• Other acute or severe health, cognitive, or psychological conditions that prevent participation.
• Pregnant, lactating, or trying to become pregnant.
• Decide to use different PAP device than ResMED Airsense 10.
• Prescribed high-dose benzodiazepines (equivalent to >1 mg lorazapam/night).
• Daily opioid medication use at night.
• Unwilling to discontinue use of any current wearable sensor for the duration of the trial.
• Previous documented history of treatment/referral for claustrophobia.
• Previous PAP use.
• Other conditions determined by a sleep medicine team member that may interfere with full participation in the trial.
• Planning to travel for more than seven consecutive nights during the trial.
• Currently engaging in shiftwork defined as night shift or rotating day and night shifts.
• Unwilling to complete follow-up visits.