When a consumer launches an app, the first thing he sees is the UI/UX interface. The user interface and the user experience are both referred to as UI/UX. The user interface and the experience that the app produces determine how well it succeeds in the market. When each smartphone has around 15 to 20 apps and everyone has several smartphones, the quality of the user experience decides whether or not a mobile app is successful. The Mobile UI/UX Design development of not just freshly released mobile applications, but also older apps, has to be improved.