1Measure 3 times, snap 3 photos
Use your own monitor. After each reading, photograph its screen with the in-app camera or pick the photos from your library.
How it works
Measure like your doctor asks. Skip the notebook.
Home blood pressure guidelines ask for several readings in a row. BP Lens turns them into one clean record, without copying a single number.
1
2One average, ready to save
BP Lens reads systolic, diastolic and pulse from each photo, shows the three readings and their average, and lets you fix any number.
3Your history, on your iPhone
Every record stays on your iPhone, with its photos, its level and a report every 3 days. Back it up only if you want to.
Inside the app
Clear numbers. Calm design.
Built for the moment after the cuff comes off: big numbers, honest colors and nothing to configure.
Features
Everything your readings need. Nothing they don't.
- Normal
- Elevated
- Stage 1
- Stage 2
- Crisis
Reads your monitor
Three photos of the screen become three readings and their average. Prefer typing? Enter them by hand.
Your level in plain words
Every record shows its informational category from the 2017 AHA/ACC guideline, from Normal to Hypertensive crisis.
A report every 3 days
7- and 30-day averages, morning vs. evening, variability and trend, with an optional notice when it's ready.
Trend at a glance
See systolic and diastolic over 7, 30 or 90 days and export everything as CSV for your doctor.
Before-you-measure checklist
Coffee, exercise, rest, medication: the context that explains a high reading is saved with it.
Apple Health, if you want
Turn it on and your readings flow to Apple Health; turn it off and they stay only in BP Lens.
New in version 1.1
A report that explains, not just plots.
Every 3 days BP Lens looks at your last 7 and 30 days and tells you, in a sentence, where you are and which way you are going.
- Averages that matter. 7- and 30-day averages, morning and evening, variability and trend.
- Context included. Your optional profile (age, medication, habits) adds the right advice.
- Share it in one tap. Send it to your doctor or family as an image or a link that expires.
New in version 1.1
Ask your AI about your blood pressure.
Create a private link and paste it into ChatGPT, Claude or Gemini. Your assistant reads your history and answers your questions — and the link expires in 30 minutes.
- Private by default. A one-time link that expires in 30 minutes. Revoke it whenever you want.
- Works with any assistant. A plain link for chat, or an MCP connector for assistants that support it.
- Optional encrypted backup. Sign in with Apple or Google to back up and restore. Your data is encrypted.
Privacy
Your health data is yours.
No account neededUse every feature without signing up. The account is only for backup.
Photos stay with youOur server reads the 3 photos and doesn't keep them.
No ads, no trackingNo ad networks, no data brokers, nothing sold.
Your call, alwaysExport, back up, or delete everything from inside the app.
FAQ
Questions, answered.
Which monitors does BP Lens read?
Any home monitor with a digital screen showing systolic, diastolic and pulse. If a photo is blurry or a number looks off, you can correct it before saving, or enter the reading by hand.
Why three readings?
Home blood pressure guidelines (AHA/ACC 2017, ESH 2023) recommend at least two readings in a row and using the average. BP Lens makes three effortless and averages them for you.
Is it a medical device?
No. BP Lens is a diary with informational categories. It does not diagnose or treat, and it never replaces your doctor. In an emergency, call your local emergency number.
Do I need an account?
No. Everything works without one. An optional Apple or Google sign-in adds an encrypted backup so you can restore your history on a new iPhone.
What happens to my photos?
Only with your consent, the three photos are sent to our server to read the numbers. They are not kept there. Your records and your profile stay on your iPhone.
Does it work with Apple Health?
Yes, if you turn it on. Your readings can be saved to Apple Health and BP Lens can read your past ones.
Your next reading takes three photos.
BP Lens for iPhone. One-time purchase, no subscription, no ads.
Coming soon to theApp Store
BP Lens is not a medical device. Categories are informational, based on the 2017 ACC/AHA guideline; they do not diagnose, treat or replace a health professional. In an emergency, call your local emergency number.