In the United States, about 40 percent of heart failure (HF) patients are readmitted within 1-year following their first admission for HF and hospitalization accounts for approximately 70 percent of the costs of HF management. As a result, the management of HF patients is evolving from the traditional model of face-to-face follow-up visits toward a proactive real-time technological model of assisting patients with monitoring and self-management while in the community. The investigators plan to test the impact of a mobile application on clinical outcomes in HF.