Technology stack, app idea, user-friendliness, and a ?great design? together make a successful app. No matter how great your app idea is, its performance ultimately comes down to its design. App design lays the foundation of the development process. There are many elements that together form ?mobile app design? like user experience & user interface, which decides whether users would spend any time in the application or not. Read this amazing blog that highlights what factors influence the cost of app designing and how you can optimize the cost of designing the app.