BP Diary

Keep a blood pressure log

Record readings from your monitor, follow your history and share a report with your doctor.

Free. No ads. No account to start.

Coming soonApp StoreGet it onGoogle Play

Also runs in your browser.Open the web app

Keep a record you can look back on

You have just used your monitorSave the reading while it is still on the display. Add a note if there is something you want to remember.
You want to see what has changedChoose a period to see your readings and averages together. Look back at the times and notes for individual readings.
You are getting ready for an appointmentChoose the dates you want to discuss and print or share the report. Camera estimates are kept separate from cuff and manually entered readings.

See the record you have built

After two weeks, your readings, times and notes are together in one record. Choose the dates for your visit and share a report that keeps cuff readings, manual entries and camera estimates clear.

Use the monitor you already have

Photograph its display or enter the numbers yourself. The diary, charts, reminders, sync and reports for dates you choose are free, with no ads. The camera estimate is optional.

Before you start

Does my monitor need to connect to the app?

No. Photograph its display and check the numbers, or enter a reading yourself. BP Diary does not connect to your monitor by Bluetooth.

Can I bring in readings from another app?

You can import a diary exported by BP Diary as CSV or JSON. Imports from Apple Health or a monitor manufacturer's app are not supported. You can enter earlier readings manually and set their date and time.

What does the camera do?

A face scan gives a blood pressure estimate, not a cuff measurement. Calibration uses a cuff reading before and after a camera scan to personalize those estimates. Confirm important readings with a cuff. You do not need to use the camera to keep a diary.

What does it cost?

Recording, calibration, history, charts and reports are free, with no ads. Reminders on your phone and sync between your devices are free too.

Where does my data live?

Your diary is stored on this device. If you sign in, your readings and profile also sync through your account. You can export readings or delete your data in Settings. The Privacy Policy explains face-scan processing.

Does it work offline?

Your saved diary, charts and reports work offline. If you are signed in, changes sync between your devices when you are online again.

Which thresholds does it use?

Choose ESC 2024 home ranges or AHA/ACC 2025 categories in Settings. The choice changes category names and colors, not your readings. Your region suggests the starting reference. A category is not a diagnosis or your personal treatment target.

Will it run on my phone?

The Android app is available now. The iPhone app is coming soon. The diary also opens in your browser on a phone, tablet or computer. Sign in with the same account to see the same diary on each device.

Free blood pressure tools

Check one reading, calculate an average, print a blank log or estimate mean arterial pressure.

Blood pressure calculatorCheck your blood pressure range under European or US guidelines. Enter the two numbers from your monitor.Average blood pressure calculatorCalculate your average blood pressure from home readings and see its range under European or US guidelines.Printable blood pressure logDownload a free printable blood pressure log for 7 or 14 days, with morning and evening readings, heart rate and notes.Mean arterial pressure calculatorCalculate mean arterial pressure from one reading. See the formula and why MAP is a clinical measure, not a home target.

Questions about your readings

All articles
How to check blood pressure at home, and when to take the readingsLearn how to check blood pressure at home, prepare for a reading and keep a consistent daily routine.
How to keep a blood pressure log your doctor can useLearn what to record in a blood pressure log and how to prepare a useful report for your doctor.
Normal blood pressure by age, and why the ranges have no age bandsUnderstand adult blood pressure ranges, how age affects interpretation and why a home log helps.