When it was decided to launch a brand new app, we recognized the opportunity to build a brand new design system for the mobile app with a focus on usability and ADA Compliance.
It was decided to focus on building, testing, iterating core components (text hierarchy, buttons, input fields) before building full UIs. This allowed the engineering team to focus on the usability of the interactive components, and when the full interfaces were designed later, it was an easy build.
The design system helped speed up the time to design and build. It also helped immensely in the everyday vernacular, “just swap that field to a ‘read-only’ state instead of ‘disabled’.”