The significance of user interface (UI) in application design lies in its impact on user experience (UX). A well-designed UI ensures that applications are intuitive, easy to navigate, and visually appealing. This facilitates user engagement, as users are more likely to continue using an application that is enjoyable and straightforward. Good UI design also plays a role in achieving business objectives by increasing user satisfaction and retention rates. Hence, investing in effective UI is essential for translating user needs into functional and appealing designs, contributing to the application’s overall success.