This document provides guidance on user experience (UX) design for fintech startups. It discusses why good design matters, what constitutes good UX design, and how to create good UX. The key aspects of UX design covered are: understanding users through user personas and use cases, designing with a user-centered approach through analysis, design, and testing, simplifying designs based on data from users, and obtaining feedback through user testing of prototypes. The overall message is that UX design should be purpose-driven, problem-solving, and focused on meeting user needs through iterative testing and refinement.