The Importance of User Interface and User Experience in Mobile App Development Today, mobile apps are playing a major role in our day to day life. They help us in different aspects of life, such as organizing, entertaining and much more. Since the application is installed on our device, it’s the only thing that provides constant touch-point with the users. Therefore, a good user experience is an important factor for every application. The interface plays a vital role in crafting a great user experience. The interface determines the experience that people have with a product or service from beginning to end. It should be designed in such a way that when users use it for the first time, they feel comfortable at once.