Symptom Burden and Health Related Quality of Life of Cancer Patients With Concurrent Heart Failure

Inclusion Criteria: * Age 18 years and older * Individuals with a concurrent solid tumor cancer diagnosis * Not receiving active cancer treatment except for those on maintenance (i.e., Selective ER modulators (SERMs)\[Tamoxifen\], Aromatase inhibitors (Anastrozole, Letrozole, Exemestane), Ovarian suppression therapy (GnRH Agonists \[Leuprolide\], Androgen deprivation therapy for prostate cancer * Completed cancer treatment at least 3 months and up to 3 years before study enrollment. Therapy * Able to read, speak and consent in English * Ability to understand and the willingness to sign a written informed consent document * Diagnosis of heart failure, confirmed by echocardiogram, MUGA, or cardiac catheterization * Internet access via smart phone, tablet, a computer, or another device with the capacity to 1) download the Fitbit App and 2) complete electronic study assessments via REDCap. Exclusion Criteria: * Participants undergoing active cancer treatment. * Inability to provide consent in the medical record, such as cognitively impaired individuals.