Blood pressure log for iPhone
Know what your blood pressure is doing between doctor visits.
Log blood pressure readings from any cuff on your iPhone in seconds. CardiLog stages each one, flags morning surges and white coat gaps, and turns weeks of numbers into a PDF your doctor can read in a minute.
Free 3-day trial · Weekly, yearly or lifetime plans · No account
- Works with Omron, Withings, iHealth or any manual cuff
- Readings stored on your phone
- Apple Health sync
- Available in 32 languages
Three steps, under a minute a day
1
Measure with your cuff
Any brand, any age. Calm Mode guides the 5 minutes of rest that guidelines recommend first.
2
Type it or scan it
Enter the numbers or point your camera at the display. Add tags like stress, caffeine or a missed dose.
3
See the pattern, share it
Trend charts and automatic checks, then a PDF report for your next appointment.
What CardiLog does
Explore all features in depth →Log in seconds
Type or photo-scan systolic, diastolic and pulse from any monitor and see the reading's stage right away.
- Works with any monitor, no Bluetooth pairing
- Photo scan reads the numbers off the display
- Saves to Apple Health, plus a daily reminder
See the trend, not just the number
A weekly insight, trend charts and a time-of-day breakdown show the pattern behind your readings. It all runs on your phone.
- Flags morning surges, a white coat gap and sustained rises
- 7, 30, and 90-day trend chart with a normal range band
- Time-of-day breakdown of your systolic readings
A full history you can search
Each reading, searchable and filterable by stage, ready to review before your next appointment.
- Search your history and filter by stage
- Color-coded stage badges at a glance
- Export a PDF or CSV for your doctor
Built for the way people actually track
Tracking Blood Pressure for Aging Parents
Keeping an eye on a parent's blood pressure tends to mean texts, sticky notes, or a notebook nobody can find. CardiLog puts their readings in one app, with a PDF you can take to their next checkup.
Read more
Preparing for a Doctor's Appointment
"How has it been at home?" is hard to answer from memory at a doctor's appointment. CardiLog turns weeks of readings into a report you can hand over, and a history you can search in the waiting room.
Read more
Managing White Coat Syndrome
If your numbers are always higher at the clinic than at home, you may be seeing the white coat effect, and you're not imagining it. CardiLog keeps home and clinic readings apart and compares them, so you have something concrete to show your doctor.
Read more
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Questions before you download
Is CardiLog free?
It's a free download, but full use of the app needs a subscription. You'll see the options after onboarding.
Does CardiLog work with my blood pressure monitor?
Yes. It works with any monitor (Omron, Withings, iHealth, A&D or a manual cuff) because you type the numbers or scan the display with your camera. It doesn't pair over Bluetooth.
Is my blood pressure data private?
Your readings are stored on your phone and there's no CardiLog account. Your history isn't synced to a server. The app does send usage analytics, which include the values of readings you save, tied to a random ID rather than your identity. The privacy policy lists exactly what's sent.
Can I export or share my readings with my doctor?
Yes. Export a PDF (readings, averages, MAP, Pulse Pressure and stage) or a CSV, and send it by email, AirDrop or Messages.
Is CardiLog a medical device?
No. CardiLog is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or health condition. It's a log and trend tool. Talk to a qualified physician before making medical decisions, and call emergency services in an emergency.
Is CardiLog available on Android?
Not yet. CardiLog is iPhone only for now.
Start your log today
Your doctor sees your blood pressure only at appointments. CardiLog keeps track of it in between.
Download on the App StoreFree 3-day trial · Weekly, yearly or lifetime plans