Case file 05 Healthcare mobile app One month · Design system

A system begins with a symptom

One app. Too many
languages.

A fully scalable design system for a healthcare mobile app.

Poor UX, improper styling, and inconsistent UI patterns were affecting the healthcare mobile app experience. My role was to lead the foundational establishment of a new design language and system that could scale across mobile screens.

Follow the build
Mobile design system cover showing healthcare app screens and token variables
A scalable mobile design system for healthcare app screens, visual foundations, and reusable interface decisions.

01 The fracture

The screens worked.
The product did not feel whole.

Core healthcare journeys had drifted into different rules for color, spacing, radius, hierarchy, and interaction.

Appointments screen showing completed, upcoming, and cancelled healthcare appointments
Care Plan screen showing daily insights and health escalations
Reports screen showing uploaded healthcare documents
72%of negative feedback pointed to inconsistent UI patterns

01 Fragmented app language

02 Repeated design decisions

03 Accessibility and scale risk

02 The inventory

Before drawing a library,
I named the decisions.

The roadmap began with research into Base, Material 3, and Apple iOS 26. I audited the app, separated primitives from meaning, and established a shared visual grammar.

Color / semantic
114organized color tokens
Space / radius
8spacing + radius tokens
Type / locale
Aa介護Health
hierarchy with CJK support
Access / themes
AA
WCAG contrast + inverse support

03 The assembly

One foundation.
Many coherent screens.

Reusable tokens, attached properties, scalable variants, adaptive sizes, themes, and interaction states became one dependable path from decision to interface.

Healthcare dashboard screen showing readiness, alerts, appointments, wellness metrics, vitals, care-plan updates, and reports
  1. 01Tokensdecisions become reusable
  2. 02Componentsstates become predictable
  3. 03Patternsjourneys become coherent
  4. 04Documentationthe system becomes transferable

04 The operating model

A library only scales when people can use it without its creator in the room.

Audit

Mapped flaws, scalability issues, and pattern inconsistencies across the existing product.

Roadmap

Structured the path that took the healthcare design system from zero to one.

Build

Created variables, reusable components, modes, typography, primitives, and semantic tokens.

Document

Recorded typography, spacing, effects, and color decisions for future product teams.

Collaborate

Led the system work alongside a fellow UX designer and a developer.

05 The proof

Consistency stopped being a design preference. It became delivery infrastructure.

50%

reduction in design-to-dev handoff time

114color tokens organized

8spacing + radius tokens

1 monthfrom audit to foundation

Next The system keeps moving

From mobile library to healthcare product operating system.

01

Expand into appointment, profile, and care-plan flows.

02

Extend the light and dark foundations into accessibility and brand-level themes.

03

Review shipped screens against shared QA rules.

04

Connect Figma documentation to implementation notes.