Guideline Directed Medical Therapy (GDMT) Optimization and Adherence Longitudinal Study for Heart Failure.

Inclusion Criteria

• •1. Age ≥ 18 years
• •2. Recent hospitalization (within 4 weeks of enrollment) for HF with IV diuretic use
• •3. Echocardiographic data with EF measurements available in the last 6 months and after HF diagnosis
• •4. Established outpatient care at the participating sites
• •5. Eligible to receive at least 2 of the 4 GDMT classes (ACEi/ARB/ARNi, Beta-blockers, MRA, and SGLT2i) for HFrEF and HFmrEF and at least one of the three (ARB/ARNI, MRA, SGLT2i) for HFpEF
• •6. Not on Target GDMT for all the eligible GDMT classes
• •7. \>12 months of expected survival
• •8. Comfortable with spoken and written English communication
• •9. Access to Apple Watch-compatible iPhone