Onboarding Mobile App Design refers to the process of creating a welcoming and engaging experience for users when they first open a mobile application. The design should aim to introduce users to the app's key features and functionalities in a clear and intuitive way, making it easy for them to get started and understand the app's value proposition. The ultimate goal of both approaches is to create products that meet the needs of users and improve their overall experience. Both HCD and UCD involve extensive research and testing to understand users' needs and behaviors, as well as iterative design and prototyping to create interfaces that are easy to use, intuitive, and engaging.