Abstract
<jats:p>Education for sustainable development (ESD) is crucial in equipping future generations with the skills needed to address global challenges like climate change and resource depletion. The "SDG-EDU" educational application prototype was developed to support ESD through interactive content. This study evaluated its usability using the Usability Platform Test (UPT), focusing on key areas such as navigation, design, content quality, and user satisfaction. Initial testing with 18 participants identified areas for improvement, including simplifying account creation, enhancing content organization, and improving the app's visual design. Based on user feedback, updates were made to optimize the user experience. The UPT effectively refined the prototype, demonstrating its potential to support ESD and broader market adoption.</jats:p>