The blood pressure log that does the averaging for you

No. No iPhone app can measure blood pressure by itself, and apps that claim to are unsafe to rely on. You still measure with a validated arm-cuff monitor; Blood Pressure Time records the numbers, averages them and tracks them over time.

The Japanese Society of Hypertension's 2025 guidelines say to take, in principle, 2 readings each morning and evening, and use their average. If you take only 1 reading, use that value. In the morning, measure within an hour of waking, after using the toilet, and before breakfast and your morning medication; in the evening, measure before going to bed. Each time, sit and rest for 1–2 minutes first. Record every reading, and use an upper-arm cuff monitor. In Blood Pressure Time, set Measurement Count to "2 times" and the app averages the two readings automatically and saves them as one record. Each reading is kept too.

A morning rise is normal: pressure surges as you wake, and overnight medication effects fade. A consistently large morning-evening gap is worth showing to your doctor. Tracking both windows separately is exactly what the app's reports do.

Yes, both directions. It can import the blood pressure and pulse data you already have in Apple Health and writes each new averaged measurement back, so your record stays in one place.

Learn more: using it with Apple Health →

Open the report screen and choose week, month, 6 months or year: it lists averages, highs and lows split by morning and evening — the format hypertension guidelines ask home monitoring to produce. With Premium, you can also export your records as a PDF with seven days per page to save, share or print.

Yes. Turn on iCloud sync and the same log appears on every device signed in to your Apple Account — enter a reading on the iPhone by the monitor, review charts on the iPad. No separate account needed.

Yes. All the basics are free: logging with automatic averaging of 2–3 readings taken in a row, reports, graphs, calendar notes for temperature and medication, Apple Health integration and iCloud sync. Scanning the numbers on your blood pressure monitor with the camera is free for your first 50 uses. A one-time Premium purchase (US$7.99) unlocks unlimited scanning, PDF export of your records, Home Screen widgets and Quick Launch, and removes ads. No account, no subscription.

It supports typical home monitors that show systolic, diastolic and pulse stacked in three rows, from top to bottom. Monitors with a different number layout may not read reliably. Your first 50 uses are free (2 or 3 readings in one session count as one use), so you can check whether your own monitor reads correctly before purchasing Premium. Scanned numbers can be reviewed and corrected before saving, and you can always type them in instead.

Yes. Say “Record in BP Time” to Siri, and Siri asks for your systolic and diastolic values. Answer, and the reading is saved without opening the app — useful when the cuff is still on your arm. To open the input screen instead, say “Open Quick Input in BP Time”. (BP Time is the app's Home Screen name.)