A free blood pressure app that keeps your log for you

BP Notebook is a blood pressure diary for Android, with iPhone coming soon. You take your reading with your own monitor, type in the numbers, and the app keeps them in order, draws charts and makes a PDF for your doctor.

Can a phone app take your blood pressure?

No. To get a reliable reading you need a blood pressure monitor. The American Heart Association recommends an automatic monitor with a cuff that goes around your upper arm, and says that even wrist and finger monitors give less reliable readings.

Some apps have claimed to read blood pressure using only the phone's camera or a finger on the screen. In 2016 the US Federal Trade Commission took action against the makers of one such app, alleging that its readings were significantly less accurate than a cuff's. So be careful with any app that promises a reading without a cuff.

BP Notebook does not try. It requests no camera, microphone or health-sensor permissions. It is a diary: the numbers come from your own monitor, and the app helps you keep them, understand the pattern and share them with your doctor.

What BP Notebook does

• Quick logging with a large number keypad: top number, bottom number and pulse, plus the arm, your position and a note.
• Six kinds of reading: blood pressure, pulse, blood glucose (with before and after meal tags), weight, oxygen saturation (SpO₂) and body temperature.
• Charts and averages, including your morning and evening averages.
• Blood pressure categories from the AHA/ACC 2025 or ESC 2024 tables, shown for information with a colour, a word and an icon.
• A PDF report for your doctor, and CSV export for a spreadsheet.
• Reminders at the times you choose, scheduled on your phone.
• Backups to a file you keep, so you can move to a new phone.
• Easy to read: large text up to 200%, dark mode and a high-contrast theme.
• In 22 languages, including Spanish, Arabic, Hindi, Japanese and Chinese.

Your readings stay on your phone

There is no account and no sign-up. BP Notebook has no server to send your readings to: they are stored on your phone and only leave it when you choose to share a PDF, export a CSV or save a backup. The free version shows a few ads from Google AdMob, and ads never receive your health readings. Read the privacy policy for the details.

Free, with an optional Pro upgrade

The free version includes unlimited readings, 7 and 30-day charts, PDF reports (after a short ad), CSV export, backups and two reminders. Pro removes ads and adds unlimited PDF reports with your date of birth and doctor's name, longer charts (90 days, 1 year and all time), unlimited reminders, encrypted backups and an automatic weekly backup. Pro is available monthly, yearly or as a one-time lifetime purchase; Google Play shows the price before you buy.

What to look for in any blood pressure app

• Honest about readings: it should work with a validated upper-arm cuff, not promise readings from the phone alone.
• Private: check whether it needs an account and where your health data goes.
• Works offline, so you can log a reading anywhere.
• Easy to share with your doctor: a clear PDF or printout beats scrolling through a phone in the appointment.
• Easy to read: large numbers and plain words.

Prefer paper? Print a free blood pressure log instead.

Sources

• American Heart Association. Monitoring your blood pressure at home. Last reviewed August 14, 2025.
• US Federal Trade Commission. Marketers of blood-pressure app settle FTC charges regarding accuracy of app readings. December 2016.

Updated November 3, 2026