The challenge
A healthcare provider needed a patient-facing mobile app for appointment scheduling, medication tracking, and secure messaging with care teams. The user base included elderly patients and people with varying levels of digital literacy, making accessibility non-negotiable.
What we did
- Ran accessibility-first design sprints with real patients to validate navigation patterns and text sizing before building
- Built the app with React Native and TypeScript, sharing 85% of business logic across iOS and Android
- Implemented WCAG 2.2 AAA compliance for all critical flows — scheduling, medication reminders, and messaging
- Designed a high-contrast, large-target interface with haptic feedback and voice-over support tested across 12 device configurations
- Integrated end-to-end encryption for patient-provider messaging with HIPAA-compliant data handling
The impact
- 92% of patients over 65 completed onboarding without assistance
- Appointment no-show rate decreased by 35%
- Patient satisfaction scores increased from 3.2 to 4.7 out of 5
- App achieved full HIPAA compliance and passed third-party security audit
- 60% reduction in call centre volume for scheduling-related enquiries