Cardia - Heartbeat

Your heart rate. And your rhythm. No watch required. Cardia turns your iPhone's camera and flash into a pulse sensor. Rest a fingertip over the lens and the flash, hold still for about 20 seconds, and get two numbers: heart rate (BPM) and heart rate variability (RMSSD). HOW IT WORKS Light from the flash passes through your fingertip. Each heartbeat shifts its color, and the camera reads that rhythm using a technique called photoplethysmography (PPG). Cardia saves a number only when two independent methods agree on it. No video is recorded, and nothing from the camera leaves your phone. WHAT YOU GET • Heart rate and HRV from one short reading • A live camera view and pulse waveform while you measure • Telephoto camera option for a steadier reading on supported iPhones • Paced breathing at six breaths a minute, with your pulse on screen and your first and last minute side by side • A 7-day chart on your Home screen • Tag readings (morning, after coffee, after exercise) and add notes • A weekly review of your readings and sessions • A daily reminder that skips days you've already measured CARDIA PRO • Unlimited readings • Unlimited paced-breathing sessions with your pulse on screen • 30- and 90-day history, and CSV export • Your usual 30-day range, shaded behind every chart • Each tag's averages next to all your other readings, plus your own custom tags • Sleep, workouts and Watch HRV from Apple Health, beside your readings • Save readings to Apple Health, and breathing sessions as mindful minutes The free version includes one reading and one measured breathing session per day, and 7-day charts. N commitment. Cancel anytime. PRIVATE BY DESIGN Your readings are stored on your iPhone. No account. No ads. No tracking. Apple Health is only used if you turn it on. Cardia is a wellness tool. It is not a medical device and does not diagnose, treat, or monitor any condition. TERMS: https://www.koirala.studio/apps/cardia/terms PRIVACY: https://www.koirala.studio/apps/cardia/privacy