"Design Your Saturday: Day 07: Mobile App Service Case Study" is a workshop focused on exploring and understanding the design process, particularly in the context of mobile app services. Participants are likely to engage in a hands-on case study, where they analyze and design a mobile app service from start to finish. This event could cover various aspects of mobile app design, including user experience, interface design, functionality, and possibly even considerations for development and implementation. It provides a practical and immersive learning experience for individuals interested in honing their skills in mobile app service design.