UnfoldAI (Flutter Web/Mobile)

Live demo: unfoldAI

Video (≤2 min): Demo Video

Repo: Repo

What it does

• 3 synced charts: HRV, RHR, Steps
• Shared crosshair + 7d/30d/90d range toggle
• Journal annotations (tap to view mood/note)
• HRV band (7-day mean ± 1σ)
• Latency (700–1200 ms) + ~10% random load failures + Retry
• Decimation for 30/90 days + dark mode

How to run

flutter pub get
flutter run -d chrome
# or build for web:
flutter build web && serve from /build/web

Data loading

Injects 700–1200 ms latency and ~10% random load failures.

Libraries (+ why)

Syncfusion Charts (web pan/zoom/trackball), Riverpod (state), Skeletonizer (loading).

Architecture

Models → Services/Loader → Controllers (providers) → Screens/Widgets.

Performance note

Bucket-mean decimation for 30/90-day ranges keeps frames under 16 ms. Preserves min/max in unit tests.

Known limits

Trackball API varies by Syncfusion version. Mobile FPS depends on device; a11y not added yet.

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