Pluto

An iPhone app for friends who wear a Fitbit Air: daily Recovery, Sleep, and Effort scores, an Effort target for the day, streaks, training tiers, weekly challenges, badges, and group leaderboards. "Training camp" style: scores front and center, dark-first.

• Data: read on the phone from the Google Health API. Raw data stays on the iPhone; only daily summaries are shared, and only with groups you choose, per category (Recovery, Sleep, Activity).
• Fair leaderboards: Effort, steps, Active Zone Minutes, and sleep. Recovery, HRV, and resting heart rate are never ranked.
• Backend: Supabase (Postgres with row-level security, proven by pgTAP tests).

Try it without any setup

Build and run, then tap Explore with sample data (or launch with -demo YES). Demo mode uses the real scoring and sync code with sample data and four sample friends.

Docs

• docs/DEVICE-SETUP.md: run it on your iPhone with your own data.
• docs/SETUP-GOOGLE.md: the Google Cloud project and sign-in client.
• docs/SCORES.md: how every score is computed.
• docs/PLAN.md: milestones and what's next.
• CLAUDE.md: architecture, conventions, and decisions.

Build and test

brew install xcodegen
xcodegen generate
UDID="$(scripts/pick-simulator.sh)"
xcodebuild build-for-testing -project App.xcodeproj -scheme App -destination "platform=iOS Simulator,id=$UDID" CODE_SIGNING_ALLOWED=NO
xcodebuild test-without-building -project App.xcodeproj -scheme App -destination "platform=iOS Simulator,id=$UDID" CODE_SIGNING_ALLOWED=NO
supabase db start && supabase test db   # database access rules (needs Docker)

Scores are estimates to guide training, not medical advice.