your
breathing coach
Notices when your body needs a moment. Helps you breathe through it — right on your wrist.
Coming soon to App Store
Notices when your body needs a moment. Helps you breathe through it — right on your wrist.
Coming soon to App StoreWhy lunna
Heart rate, HRV, and sleep — compared to your personal baseline, not a universal average, so you get fewer false alarms.
lunna only prompts when two signals agree and you're at rest. No interruptions during exercise, or during the quiet and work hours you set.
7-day trends for heart rate, HRV, and sleep — all in one place. See how your body responds to strain and recovery.
How it works
lunna builds your personal baseline over the first few days — resting heart rate, HRV, and typical sleep duration. No manual setup.
When your heart rate is elevated at rest and a second signal agrees (low HRV or sleep debt), lunna taps your wrist and suggests a 2-minute breathing session.
A guided 4-second inhale / exhale session right on your watch. Breathing sessions are saved to Apple Health. Review your weekly patterns on iPhone.
Your data never leaves your device.
lunna reads heart rate, HRV, sleep, and activity from Apple Health with your permission.
Nothing is sent to any server. No account required.
Breathing session scores are personal estimates, not medical measurements.