This study aimed to design and develop digital learning materials for Beauty and Nail Care Services among TechnicalVocational-Livelihood (TVL) students at Rodriguez National High School. Specifically, it identified the most challenging learning competencies, determined the most helpful design features, and developed a digitized instructional application to enhance competency mastery. A developmental research design was employed, involving twenty-five (25) TVL students who participated through interviews and competency assessments. Data gathered were analyzed, reorganized, and utilized as the basis for developing a Beauty and Nail Care mobile application. The results revealed that students achieved an overall mastery level of 85.80% (Mastered). While most competencies were mastered, selected areas such as nail structure, basic nail design application, and certain manicure and pedicure procedures showed ―Nearly Mastered‖ results, indicating the need for reinforcement. In terms of design features, visual aids, multimedia interactivity, and selfpaced learning were rated Highly Helpful, with step-by-step visual guides, diagrams, and video demonstrations emerging as the most effective tools for improving comprehension and engagement. Based on these findings, a Beauty and Nail Care App was developed, integrating lessons, procedures, and visual resources aligned with curriculum competencies. The application supports accessible, engaging, and self-paced learning, enabling repeated lesson review and improved skill acquisition. The study concludes that the app is an effective instructional tool that enhances learner engagement, promotes independent learning, and bridges the gap between theory and practice. It is recommended that the application be integrated into classroom instruction and supported with continuous teacher training and remedial learning strategies.