BP DiaryComing soon

Blood pressure diary

Know your numbers. Keep them private.

BP Diary helps you measure your blood pressure the right way, see your averages and trends over 7, 30 or 90 days, and bring a clear report to your next appointment. Your readings never leave your phone.

Coming soon toApp StoreComing soon toGoogle Play
See how the measuring guide works
BP Diary home screen showing a 30-day average and trend chart
Step 2 of the measuring guide: sit comfortably, with a diagram and a 5-minute rest timer

Measuring guide

Measure the right way, every time.

Home readings depend on how you take them. An 8-step guide with diagrams walks you through a reliable reading.

  1. 01

    Prepare

    For 30 minutes before, avoid caffeine, smoking and exercise. Empty your bladder first.

  2. 02

    Sit and rest

    Back supported, feet flat, arm resting on a table at heart level. A timer counts your 5 minutes of rest.

  3. 03

    Fit the cuff

    On your bare upper arm, its lower edge 2–3 cm above the bend of your elbow. Diagrams show you how.

  4. 04

    Two readings

    Take two readings at least a minute apart. BP Diary saves both and works out the average.

Every step cites published guidance from the American Heart Association (2019), the European Society of Hypertension (2021) and the NHS. Tap the small numbers in the app to see the sources.

Measurements list with readings grouped by day

Measurements

Every reading, day by day

All your readings grouped by day, with pulse and arm. Search by date ("monday", "12 oct") or filter by range. Tap to edit, swipe to delete, undo if you change your mind.

Entering a reading of 128/81 with a pulse of 66

Log

A reading in seconds

Copy the numbers from any home monitor: systolic, diastolic, pulse and which arm. Forgot to log one? Add it later with the time you measured.

Calendar showing the days readings were taken in September

Habit

See your measuring habit

A monthly calendar marks the days you measured, and which had both a morning and an evening reading. Tap a day to see its readings.

Export screen with a PDF report selected and a GP as the recipient

Share

A report for your doctor

Create a PDF report with a summary, trend chart and every reading, or a CSV file. It's made on your phone and sent from your own email or apps.

Private by design

Your readings never leave your phone.

Health data is personal. BP Diary was built so that we couldn't see your blood pressure even if we wanted to. Our server handles your account and nothing else.

Read the privacy policy

  • Readings stay on your phone

    Every reading is stored in a database on your device. None are ever uploaded to our servers.

  • Our server only knows your account

    Your name, email address and a hashed password, for signing in. Nothing about your health.

  • You choose who sees a report

    Exports go out through your own email or share sheet, only when you send them.

  • Delete means delete

    Deleting your account erases it from our server and wipes everything BP Diary stored on your phone.

Start your blood pressure diary.

Works with any home blood pressure monitor. No cables, no pairing: just type in the numbers.

Coming soon toApp StoreComing soon toGoogle Play

BP Diary is a record-keeping tool. It does not diagnose, treat or give medical advice. Always talk to a healthcare professional about your blood pressure.