AIMS: Cardiovascular diseases are a leading cause of death globally, and effective self-management is critical for patient outcomes. Integrating Internet of Things-enabled devices with smartphone applications presents a novel approach to enhancing self-management, yet challenges with digital literacy and device usability persist, especially among the elderly. This study aimed to evaluate the adherence, ease of use, and impact on health awareness of a smartphone-connected remote monitoring system among cardiovascular outpatients in Japan. METHODS AND RESULTS: We conducted a single-centre, prospective survey at Kumamoto University Hospital involving 10 cardiovascular outpatients (median age: 72.5 years) including heart failure ( CONCLUSION: This pilot study suggests that a smartphone-connected remote monitoring system may enhance self-management practices and health awareness among cardiovascular outpatients. While the findings are promising, larger studies with longer follow-up periods are needed to confirm these results and evaluate the system's impact on clinical outcomes.