<![CDATA[Introduction: This study aimed to develop and evaluate the feasibility of a secure, reliable, and user-friendly web- and mobile-based application, the Indonesia Diabetic Foot Ulcer Recurrence Assessment Tool (INDIFURUTO), for assessing the risk of recurrent diabetic foot ulcers. Methods: A system development and feasibility evaluation study was performed. The INDIFURUTO web- and mobile-based application was developed based on validated clinical risk factors and expert opinions. The feasibility evaluation comprised three components: (1) inter-rater reliability testing among 30 patients with previously healed diabetic foot ulcers at the Sei Durian Primary Health Center, West Kalimantan, Indonesia, using Cohen's kappa between two independent raters; (2) an application-layer security (vulnerability) assessment performed by an accredited cybersecurity institution using OWASP ZAP; and (3) usability evaluation among 41 multidisciplinary healthcare professionals using the validated Post-Study System Usability Questionnaire (PSSUQ). Results: Inter-rater reliability testing demonstrated near-perfect agreement (Cohen’s kappa = 0.96), indicating a high assessment consistency. No high- or critical-severity vulnerabilities were observed. Three medium-severity and three low-severity vulnerabilities were identified during the security assessment; all were remediated and successfully rechecked. Usability testing showed favorable scores across all PSSUQ dimensions (System Usefulness: 1.74 ± 0.63, Information Quality: 1.91 ± 0.68, Interface Quality: 2.17 ± 0.79, and Overall: 1.90 ± 0.66), indicating high user satisfaction and good system usability. Conclusions: These findings support the potential to enhance standardized, nurse-led RDFU risk assessment in Primary Health Center settings and inform future large-scale implementation and effectiveness studies.]]>
