Cardia: BP Diary

A simple diary for your blood pressure. Spot the patterns in your readings, keep a gentle habit going, and share a clean PDF with your doctor whenever you need to.

Cardia turns your blood pressure readings into a clear picture of your heart. It pulls measurements straight from the Health app, so anything logged with your monitor or by hand is already there, ready to chart. See your latest reading on the Trends tab, watch how it compares to your weekly average, and switch between week, month, and year to follow the rhythm of your numbers.

The Diary lays out every day in two halves, morning and evening, with each reading colored by category so you can tell a calm day from a high one at a glance. Scroll back through the months as far as your data goes. When it's time for a check-up, export a tidy PDF of any range to share with your doctor. No screenshots, no spreadsheets.

Set gentle morning and evening reminders to keep a habit going. Cardia skips a reminder on days you've already logged that half, and Urgent Reminders can break through Focus when you don't want to miss one. Add a reading from the Lock Screen, the Home Screen, Control Center, or Siri, and keep your most recent measurement in view with a widget that quietly updates through the day.

Everything stays on your device. Cardia reads from Health and writes back what you log: no accounts, no servers, no tracking.