There are different factors that contribute to a successful custom application. Of course, function is important, but even if the app does exactly what users need it to do, users may not necessarily like it if it's difficult to use due to poor legibility, navigability, responsiveness, etc.
FileMaker, the Workplace Innovation Platform, helps to speed up custom app development, right down to the smallest detail, including design styles. The user interface has a huge impact on user experience. A well-designed interface generally equates to a positive experience. Developers must ensure that they use appropriate and consistent fonts, sizes, colors, images, layouts, and so forth within their applications. They can simply accomplish this by creating custom styles for the apps they design.