Ask your health data anything—private, on-device, and ready to explain your week
The Health Data AI Assistant answers questions about your VO₂max, HRV, sleep, Recovery Capacity, Pace of Aging, and more. Models run locally on your iPhone, so your Apple Health history never leaves your device.
Private answers based on your data
The assistant reads only what you allow from Apple Health and responds in plain language. There are no servers, no analytics, and no background uploads. Switch models anytime or remove them in Settings to reclaim space.
What is my VO₂max today?
Get your latest VO₂max reading with trend context and whether it is rising or flat.
Why did my HRV drop?
See if sleep, strain, or recovery patterns explain the dip—grounded in your data.
What changed this week?
Receive a Monday-ready summary of Monday–Sunday shifts across all tracked metrics.
How can I improve sleep?
Personalized suggestions based on your own sleep regularity, duration, and timing.
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 animated AI Chat button and choose Compact or Advanced.
- Download once over Wi‑Fi; models stay local and can be removed anytime.
- Start asking questions—the assistant uses your Health data, Recovery Capacity, Pace of Aging, and Weekly Digest drivers to respond with context.
What stays on-device
- All Apple Health reads and writes
- AI model weights, prompts, and responses
- Weekly Digest summaries and Pace of Aging calculations
- Pacemaker and Blood Pressure settings
No cloud accounts, no server calls. If you remove the model, storage is reclaimed 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.