Good product UI design must have:
1. Visual hierarchy. Arrange design components in the desired order to guide users' attention and understanding. Manage size, scale, color schemes, contrast, and other factors to highlight the value of each piece.
2. Consistency. Ensure a visually and functionally consistent design to make the user's journey through the interface straightforward. This leads to smoother interactions and a better user experience.
3. Good use of colors and typography. Pay attention to colors and typography as they are crucial elements of the interface. Typography includes font size, width, style, and line length, contributing to the overall visual appearance of text.
4. Minimalism. Embrace a less-is-more approach in UI design. While creativity is encouraged, avoid overdoing it. Minimalistic design offers several benefits that appeal to users.
5. Responsiveness. Remember that users will access your digital product on various devices. Ensure that the interface is visually pleasing and user-friendly across all devices. Consistency across channels and platforms enhances user satisfaction, authority, and reputation.