Inclusion Criteria:  Age 45 years or older New York Heart Association (NYHA) heart failure classification of I to III that permits minimal physical activity without discomfort have experienced HF hospitalization in the past 6 months be fluent in English Pass a mini-cognitive screen Score of less than 2 (able to independently walk without using a cane or walker) on the Outcome and Assessment Information Set item for ambulation/locomotion  Exclusion Criteria:  severe visual (e.g., legally blind) or tactile (e.g., severe arthritis) impairments that adversely prevent the use of a smartphone or sensor devices; a history of renal failure, which adversely affects HF prognosis a diagnosis of an end-stage or terminal illness (e.g., cancer) undergone heart transplantation, or implantation of a durable mechanical circulatory support device (e.g., left ventricular assist device) due to unique self-management needs.