Marble Health
Compliance-first patient portal for clinicians

Health tech has a pattern problem: products designed by engineers for clinicians, validated by personas instead of practitioners. Marble's founders knew this because they'd lived it — both were practicing clinicians who'd used (and hated) three generations of patient portals. They wanted something different.

We embedded twelve of Marble's clinician-users in the design process from week one. Not as interviewees — as co-designers. They sat in our Figma sessions, broke our prototypes in ways we wouldn't have imagined, and vetoed three features we were convinced were good ideas. The product was better for every one of those vetoes.

The technical challenge was HIPAA compliance without making the app feel like a compliance exercise. We built on React Native with Expo for the mobile apps (patients) and Next.js for the provider dashboard. All PHI is encrypted at rest and in transit, audit logging captures every data access event, and the AWS infrastructure is Terraform-managed with a dedicated HIPAA-eligible account.

The result is an app that clinicians actually enjoy using — which sounds like a low bar until you've seen what they normally work with. The 4.8-star App Store rating came from patients, but the clinician retention rate is what Marble's investors cared about.