Perancangan UI/UX Aplikasi Mobile Pemesanan Makanan Online Pada Kedai Cotaslice Menggunakan Metode Design Thinking

The rapid advancement of digital technology has significantly influenced consumer behavior, particularly in the food and beverage sector where online food ordering has become a common practice. Cotaslice Café currently relies on WhatsApp as its primary ordering medium, which often leads to issues such as slow response times, order input errors, limited stock confirmation, and lack of transparency in order status. This study aims to design a User Interface (UI) and User Experience (UX) for a mobile food ordering application at Cotaslice Café using the Design Thinking method, which consists of five stages: empathize, define, ideate, prototype, and testing. Data were collected through observation and interviews with two cashiers and three customers to identify key problems and user needs. Solutions generated during the ideate stage were realized into low fidelity and high fidelity prototypes using Figma, featuring key functionalities such as automated stock management, order status transparency, delivery options, and promotional notifications. Usability testing was conducted using the System Usability Scale (SUS) with five respondents, resulting in an average score of 75.5 categorized as acceptable. These findings indicate that the proposed design is well-received by users, offering a more efficient, transparent, and user-friendly experience compared to the previous WhatsApp-based system, while also assisting cashiers in managing orders more effectively. Therefore, this research demonstrates that the Design Thinking approach is effective in producing digital solutions that address user needs and can serve as a foundation for further functional application development to enhance Cotaslice Café’s competitiveness in the digital era.