Lumen Health · 2024
Cross‑platform clinician app
One product surface across iOS, Android and macOS for emergency clinicians — designed for one‑handed use under pressure.
Tag
Mobile · Desktop
Duration
18 weeks
Role
Product design · Mobile · Desktop · Backend
Time to chart
−54%
App switches / shift
−81%
Clinician NPS
+62
◇ The problem
Where they were stuck.
Clinicians were juggling three apps and a clipboard. Charting was slow and error‑prone during triage.
◇ Our approach
How we shipped it.
- 01
Field-studied 22 clinicians across three EDs and rewrote the IA around triage.
- 02
Built a React Native + macOS Catalyst shell sharing a single Rust core.
- 03
Added on-device voice charting with whisper-grade transcription.
- 04
Integrated with three EHRs via HL7 FHIR with full audit trails.
◇ Stack
What it's made of.
React NativeSwiftRustFHIRPostgresWhisper
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