Introduction: Surgical site infections (SSIs) are a global health concern, with prevalence rates of 3-35%. In Indonesia, healthcare-associated infections (HAIs) reach 9.1%, contributing to increased healthcare costs and prolonged hospital stays. Effective postoperative wound care is crucial, yet delayed detection of wound infections in outpatient settings remains a challenge. This study addresses the need for technological innovation to facilitate independent postoperative wound monitoring. Objective: To develop and evaluate the effectiveness of KLOP, an Android-based mobile application, as a tool for nursing students to assess and manage postoperative wounds, aiming to reduce SSIs and HAIs. Method: Using a research and development (R&D) approach with prototyping, this study involved identifying user needs, developing a prototype, and testing functionality. The application's quality was evaluated based on ISO 25010 standards, with testing conducted on 57 respondents, including nursing students and lecturers at STIKes RS Husada Jakarta. Results: The KLOP application features wound assessment based on the Bates-Jensen scale, wound grading, and care recommendations. Testing revealed excellent quality, scoring 84.58% on ISO 25010, with high ratings in functional suitability (89.54%), usability (79.51%), and performance efficiency (88.59%). Conclusion: KLOP is an effective tool for nursing students in postoperative wound assessment and management, with the potential to reduce SSIs and HAIs. Its high-quality performance makes it a valuable resource for medical-surgical nursing practice.
                        
                        
                        
                        
                            
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