Cardia: Heart & HRV
iPhone / Utilitaires
Cardia turns the cardiac data your Apple Watch already collects into a calm, daily story about your heart — so you spend less time scrolling raw charts and more time understanding what changed.
THE DAILY CARDIAC BRIEFING
Open Cardia to a single, scrollable card story that answers the questions that actually matter: what's normal for you, what changed today, and whether anything is worth a closer look. Each card is written in plain language and compared to your own personal baseline — not a generic chart.
UNDERSTAND YOUR TRENDS
- Resting heart rate vs. your rolling 30-day baseline
- Heart rate variability (HRV) and recovery trends
- Today's heart rate range and walking heart rate average
- One-minute heart-rate recovery after activity
- Beautiful day / week / month / year charts with baseline bands
PERSONAL HEART-RATE ZONES
Adaptive zones built from your resting and max heart rate using the Karvonen method, with time-in-zone for recent workouts.
CONTEXT, NOT ALARM
Cardia uses honest, comparative language — "your resting heart rate is higher than your usual," never a diagnosis. Everything is framed against your own history, so you have an easy record to review and share with your doctor.
PRIVATE BY DESIGN
Your health data stays on your device. No account, no cloud upload, no advertising, and no third-party tracking of your health values.
REQUIREMENTS
An Apple Watch is needed for most metrics. Resting heart rate, heart rate variability, and heart-rate recovery require a compatible Apple Watch.
IMPORTANT
Cardia is a wellness and analytics tool. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Consult a healthcare professional for medical concerns. In an emergency, call your local emergency number.
