ThErapy Adherence Management in Veterans

Inclusion Criteria: * Ages 21 to 85 * Diagnostic Apnoea-Hypopnoea Index (AHI) ≥ 15 determined by in lab polysomnography (PSG) or home sleep testing (HST) or by a sleep therapy device * Eligible for treatment with Automatically adjusted CPAP or Automatically adjusted BiPAP * Currently has a Smart Phone or home access (computer with internet access) to the internet based version of the software application Exclusion Criteria: * Participation in another interventional research concerned with sleep disorders within the last 30 days * Major uncontrolled medical condition that would interfere with the demands of the study, adherence to PAP, or the ability to commit to follow-up assessment including conditions such as poorly managed or controlled or advanced stages of pulmonary disease, cardiac disease, neurological disease, neuromuscular disease, cancer, and renal disease. * Prior PAP use within the previous 12 months. * Predominantly Central Apneas (≥ 50% central apneas) or Cheyne Stokes Respiration (CSR) (≥ 20% of Total Sleep Time (TST) with CSR) * Chronic respiratory failure or insufficiency with suspected or known neuromuscular disease, moderate chronic obstructive pulmonary disease (COPD), or any condition with an elevation of arterial carbon dioxide levels while awake or the requirement for supplemental oxygen (at night or continuous) or mechanical ventilation. * Surgery involving the upper airway, nose, sinus, eye, teeth, or middle ear within the previous 90 days * PAP therapy is otherwise medically complicated or contraindicated such as those with a difficult to size or adjust interface (mask) resulting in facial pain, skin irritation or trauma, or excessive air leaks