400K+
Monthly Active Users
4.8★
App Store Rating
40%
Engineering Velocity Gain
220+
Design System Components
Halcyon had a working MVP but it was struggling under scale, had significant accessibility gaps, and had accumulated enough design debt that their engineering team was slowing down. They needed a complete design system and a rebuilt data architecture.
Services Delivered- Product Design
- Software Engineering
We rebuilt Halcyon from the foundation: a new React Native application with a fully documented design system (220+ components), a HIPAA-compliant data pipeline, and accessibility testing at every stage. We delivered in three phases to minimise disruption to existing users.
App Store rating improved from 3.2 to 4.8. Engineering velocity increased 40%. Zero HIPAA incidents. 400,000 monthly active users within 6 months of relaunch.