SYLH is a utility application designed for iPhone users, focusing on the management of sports drinks. The app allows users to log various types of sports drinks, detailing flavors, functions, ratings, and personal experiences. This feature enables users to modify the ratings of each drink in real time, facilitating a comprehensive overview of their preferences and experiences.

In addition to tracking sports drink information, SYLH records drinking occasions and experiences, helping users evaluate the advantages and disadvantages of each drink. The app includes an "Assistant" module that aids users in making informed decisions when selecting from multiple drink options. This functionality is particularly beneficial for athletes or fitness enthusiasts seeking to optimize their hydration and nutrition strategies.