Ask about Stress Resilience, Circadian Alignment, or any metric—private and on-device
The AI Coach now understands all 14 metrics—including new Stress Resilience and Circadian Alignment scores—with access to 6 months of your health history for richer, more accurate conversations. Everything runs locally on your iPhone.
6 months of context for smarter answers
The AI Coach analyzes 6 months of your health history to give richer, more accurate answers. Ask about stress resilience, circadian health, or any of your 14 tracked metrics. No servers, no analytics, no uploads—everything stays on your device.
How's my stress resilience?
Understand your stress adaptation capacity based on HRV patterns, recovery trends, and sleep quality.
Is my circadian rhythm healthy?
Get insights into your sleep timing, wake patterns, and activity alignment with your natural clock.
Show me my 6-month trends
Review long-term patterns across all 14 metrics with zone-colored visualizations.
Why did my HRV drop?
See if sleep, strain, or recovery patterns explain the dip—grounded in 6 months of your data.
What changed this week?
Receive a Monday-ready summary of shifts across all tracked metrics including new scores.
Choose your AI package
Pick the package that matches your device. The app auto-detects compatibility for the Advanced model. Both run fully on-device with no cloud access required.
Recommended (Llama 3.2 3B)
Approx. 2 GB
Fast responses, great for most devices. Works on all supported iPhones.
Advanced (Llama 3.1 8B)
Approx. 5 GB
More detailed answers. Requires iPhone 15 Pro or newer (8GB+ RAM). Auto-detected.
Requirements: iOS 26 or later, 2 GB free for Recommended and 5 GB for Advanced. Advanced requires iPhone 15 Pro or newer (8GB+ RAM)—the app will guide you to the right package.
How it works
- Update to the latest My Bio Age release and open the dashboard.
- Tap the AI Coach button and choose Recommended or Advanced model.
- Download once over Wi‑Fi; models stay local and can be removed anytime.
- Start asking about Stress Resilience, Circadian Alignment, or any metric—the AI Coach uses 6 months of your health data for context-rich answers.
What stays on-device
- 6 months of Apple Health data and all 14 metrics
- AI model weights, prompts, and responses
- Stress Resilience and Circadian Alignment calculations
- Weekly Digest summaries and Pace of Aging history
No cloud accounts, no server calls. All 6 months of data stays local. Remove the model anytime to reclaim storage immediately.
Requirements and controls
Device + storage
- iPhone running iOS 26 or later
- At least 2 GB free storage for Recommended, 5 GB for Advanced
- Advanced model auto-detects device compatibility (8GB+ RAM required)
- Apple Watch optional but improves cardio-fitness signals
- All data and inference run locally—no network required for chat
Privacy by default
The assistant inherits your Health permissions. Disable any category in Apple Health to remove it from AI answers. Toggle model downloads in Settings; no transcripts are stored in the cloud.