The challenge
Patients, many of them older or visually impaired, struggled with an inconsistent interface spread across web and mobile.
Our approach
- 01
Ran usability sessions with patients and clinicians before redesigning.
- 02
Built a token-based design system shared between Figma and code.
- 03
Tested every component against WCAG AAA contrast and screen readers.
The outcome
Contrast compliance: AAA · Documented components: 120+ · Support calls about the app: −40%. The Lumin Healthcare team now owns the full codebase and documentation, with Promettis on hand for ongoing improvements.