Efficacy of Remote Monitoring of Patients With Heart Failure and Reduced Ejection Fraction by Using Caaring® Software

Inclusion Criteria: * Patients aged 18 years or older * Patients diagnosed with heart failure with reduced ejection fraction (EFS40%) * Patients discharged after an episode of acute heart failure and/or patients who are being followed up after being admitted for heart failure. * Patients who extensively use a smartphone. * lnformed Consent is obtained from the patient Exclusion Criteria: * Patients with cognitive ar sensory difficulties or with insufficient command of Spanish who, in the opinion of the investigator, makes it difficult to understand the questions ar the scales, as long as they do not have a legally authorized representative capable of participating in the study. * Transient patients in whom it may be anticipated that follow-up will not be completed due to a change of residence. * Patients Who are participating at the time of recruitment in any other clinical trial. Participation in observational studies will not be an exclusion criteria. * Patients whose main diagnosis is a poorly controlled mental disorders ar other medical illness. * Patients with terminal illness and/or in palliative care according to the criteria of the SECPAL (Spanish Society of Palliative Care). * lnstitutionalized patients * Patients who are pregnant ar breastfeeding. * Patients whose inclusion is not considered advisable by the investigator's assessment due to they are under specific follow-up in other hospital units (hemodialysis, transplants, etc.) that require mandatory hospital attendance less frequently than once every two months.