Purpose <p>Social support has been identified as an important component of diabetes care plans. Mobile health (mHealth) applications have emerged as valuable tools for diabetes self-management, serving as a supplementary support resource. This study explored the associations between perceived social support, the use of diabetes management applications, and diabetes self-management, particularly, how these relationships varied between app-users and non-app users, focusing on the differential impact on individuals with Type 1 Diabetes (T1D) and Type 2 Diabetes (T2D).</p> Methods <p>Participants (<i>N</i> = 391) were recruited via Prolific, an online service, and met criteria including being over 18 years old and diagnosed with T1D, T2D, or another form of diabetes. Participants completed a 15-minute online survey, which included demographic questions, health status, application use history, perceived diabetes self-management, eHealth literacy, social support levels, depressive symptoms, and interest in receiving support from an application.</p> Results <p>Data analysis revealed that higher levels of traditional social support were significantly associated with greater social support needs and better diabetes self-management. App-users reported higher support needs from applications, with stronger associations observed in individuals with T1D.</p> Conclusion <p>The current study provides preliminary evidence demonstrating positive attitudes about the use of support features in diabetes management applications and their perceived benefit, particularly for participants that engaged in current or historical use of an application. Additionally, participants identifying as having T1D reported higher levels of application support received than those with T2D, indicating an area of growth for diabetes management software.</p>