Good design isn't just about looking good; But they include good performance, great user experience, and problem solving. When the design is simple and at the same time manageable, it attracts and keeps users. In the words of Steve Jobs: "Design is not just the look and feel. Design is also how it works.

Good performance means fixing all the defects in the product or service, you have to provide a product that shows the idea behind it well and the user can relate to it well and provide an acceptable performance for the user.