Challenge
Clinicians wanted continuous wearable signals, but patients used mixed Apple and Wear OS devices with inconsistent apps.
Case study · 2025
Healthcare & Wearables
Wearable health OS for watchOS and Wear OS
watchOSWear OSFlutterBLEUI/UX
Client
Digital health clinic network
Engagement
Wearable OS · watchOS & Wear OS
Duration
9 months
Year
2025
VitaBand unified vitals collection across Apple Watch and Wear OS with a Flutter companion. Product and interaction design lived in Figma first — complications, companion screens, and a shared token library — before native and Flutter implementation. BLE sync and consent-aware export give clinicians continuous signals while patients keep transparent controls over what leaves the device.
A dual-platform wearable suite syncing vitals to Flutter companions with privacy-first data handling.
Narrative
How the engagement moved from constraints to a shippable system.
Approach
We built native watch experiences plus a Flutter companion, with BLE sync and consent-aware data export.
Solution
VitaBand unifies vitals collection across platforms while keeping patient controls transparent.
Scope
What we delivered
Figma design system for watch + companion surfaces
watchOS and Wear OS native experiences
Flutter companion app
BLE sync and background collection strategies
Consent and privacy export flows
Clinician dashboard feed integration
Privacy counsel review package
Highlights
What stood out
Daily active wear adherence +31%
Unified clinician dashboard feed
Consent flows reviewed with privacy counsel
Figma tokens kept watch and phone UX in sync
Engagement flow
A repeatable rhythm from discovery through hardening — tuned to this product’s constraints.
01
Clinical & patient needs
Aligned vitals priorities, consent expectations, and mixed-device reality — then mapped flows in Figma.
02
Design system & prototypes
Built Figma libraries for complications, companion screens, and motion specs before engineering scaled.
03
Native watch builds
Shipped watchOS and Wear OS collection experiences against the design system.
04
Companion, sync & clinic pilot
Built Flutter companion with BLE sync, then piloted with clinics and iterated on battery and UX.
Technology stack
The delivery stack behind this engagement — client surfaces paired with services, data, and infrastructure.
Wearables
watchOSWear OSSwiftKotlin
Companion App
FlutterBLE SyncUI/UXFigmaDesign Systems
Backend
Node.jsREST APIsConsent-aware ExportSecure Storage
Outcomes
01
Daily active wear adherence +31%
02
Unified clinician dashboard feed
03
Consent flows reviewed with privacy counsel
Looking ahead
Add on-device anomaly hints and tighter EHR write-back paths.
More work
Onboard the Apeiriion express
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