With the development of smartphones, there are more and more kinds of functions, among which the most used by users is the camera.In fact, Some smartphones even use the photo function as the main means of promotion. As smartphone cameras advance, so does their popularity. A key feature in photo editing apps is color adjustment, which lets users tweak the mood and style of their images. A well-crafted UI is crucial for making this feature efficient, affecting how easily users can find and use it, and their overall visual and interactive experience. This study zeroes in on the UI design of color adjustment in four top photo editing apps: VSCO, Hypic, Lightroom, and Snapseed. The findings are straightforward: First, there's a clear variation in how these apps navigate, design icons, and lay them out. Second, each app excels in organizing content and has its own distinct flair. Third, by examining their weaknesses and conducting market research, the study offers suggestions to enhance UI efficiency for color adjustment. Finally, it is hoped that this will be helpful to mobile platforms that want to create an overall user experience that allows users to quickly and accurately use the features they need and are accustomed to.