Tsai Inkwa developed and refined multiple features for Expensify/App and its internal counterpart, focusing on offline reliability and user experience improvements. They enhanced report management by enabling offline visibility and responsive search, addressing pending state logic to ensure accurate status display. Inkwa improved IOU flows by introducing a custom React hook for waypoint management, supporting robust draggable lists, and clarifying data processing. Their work on the split expense UI included input validation and layout adjustments to guide users. Using TypeScript, JavaScript, and CSS, Inkwa also stabilized test workflows, demonstrating depth in front end development, state management, and UI/UX design.