Nowadays, mobile applications and web applications have become an indispensable for almost all businesses in the world. Along with the spread digital activities, User interface (UI) and User experience (UX) have become as never before. Technically, User interface design or user interface engineering is the design of user interfaces for machines and software, such as computers, mobile devices, home appliances, and other electronic devices, with the focus on maximizing usability and the user experience. But the prime use and aim of a smart UI design is to make user’s interaction more lucid and comprehensible in terms of attaining the best user experience. Also, it creates ways for better customer engagement that encourages your customers to interact and share in their experiences fostering substantial business return.