User interface (UI) design is a critical part of the success equation for any app, regardless of its value proposition. Therefore, it is important for a web design and development company to not just scratch the surface, as far as UI design is concerned, whether it is for a mobile app or a web project.
There are certain mobile app UI design tools that are non-negotiable. They help designers make UI design effective. They are used throughout the entire design process: in the research, conceptualization, and implementation stages.
While many designers favor different tools, we have compiled a list of nine that are popular across the board. More information you can read in this article https://mlsdev.com/blog/171-mobile-app-ui-design-tools