This study developed an app for the guidance of home-based diabetic foot care to explore its impact on patients' foot assessment awareness and self-care behavior after using this app. The study also assessed the app's effectiveness in cultivating behavioral habits that are effective in managing diabetes.

Diabetes is a common chronic metabolic disease worldwide. Approximately 50% to 60% of ulcers caused by diabetes become infected, and moderate to severe infections can lead to lower limb amputation. Among amputees, the five-year mortality rate exceeds 70%.Smart devices (mobile phones, computers, etc.) are indispensable necessities to modern lives. Downloadable mobile health applications (mHealth Apps) on smartphones are widely used in medical care . The use of these apps on smartphones has created a new field in the health industry known as mobile health

Inclusion Criteria:

1. Clinical diagnosis of type 2 diabetes .
2. Aged between 20 and 80 years.
3. Able to use mobile apps or tablets for health management .

Exclusion Criteria:

1. Patients who were unconscious, had delirium, were bedridden, had cognitive impairment, or were unable to perform daily self-care.
2. Patients who refused to participate.

Collect diabetes cases from a Christian hospital in the northeast that agrees to join this program