Everyone wants to experience the best technology in the 21st century, but they don't want to spend too much time or strain their already-busy minds doing it. The same is true when using mobile applications or websites for browsing—the quicker and more effectively these tools respond, the better results they produce. In a nutshell, it concerns modern consumers! And most technology companies focus on the user interface (UI) and user experience design (UX) of the applications when it comes to user satisfaction with mobile applications or websites (UX). However, the terms UI and UX are frequently used interchangeably. Consequently, our goal is to explain the meaning behind UI and UX design.