Usability of the HarvestXplore Mobile Application for Postharvest Technology through Self-Directed Learning

Abstract

The integration of digital learning tools in higher education has become increasingly important in supporting self-directed learning, particularly in technical and vocational disciplines. This study aimed to develop and evaluate the usability of the HarvestXplore mobile application as a digital teaching aid for the Postharvest Technology course among Bachelor of Education (Agricultural Science) students. The application was developed based on the ADDIE instructional design model, encompassing the phases of analysis, design, development, implementation, and evaluation. A quantitative research design was employed, involving an online questionnaire administered to undergraduate students enrolled in the course. Usability was evaluated across four dimensions: multimedia, technical, interactivity, and content. The findings revealed high usability levels for all dimensions, with mean scores ranging from 4.45 to 4.49. The multimedia and interactivity features, including videos, quizzes, and gamification elements, significantly enhanced student engagement and learning motivation. Overall, the results indicate that HarvestXplore has strong potential as an effective digital teaching aid to support self-directed learning in postharvest education.