Proof-of-Concept Study of Heart Habits Application for Patients With Heart Failure

This study assesses the ability of ambulatory patients with heart failure (HF) to use a smartphone application created for the management of patients with chronic HF. This study will aim: * To understand the frequency with which ambulatory HF patients engage with this smartphone application. * To determine whether patient's knowledge of HF and its management has improved with the use of this smartphone application. * To assess improvement in quality of life measures related to the use of this smartphone application. * To assess improvement in lifestyle measures related to the use of this smartphone application.