Health & Wellness Tech

Beginner

5 min read 7 stepsMay 8, 2026Verified May 2026

How to Log Glucose Readings in the iPhone Health App

Track every finger-stick or CGM reading in one place on your iPhone, and share the chart with your doctor.

At a Glance

Open the Health app and find Blood Glucose

~17s

Tap the Health app icon (white square with a red heart). At the bottom, tap Browse. Scroll down to the section called Heart and Body, then tap Blood Glucose. If it is your first time, the screen will be blank with a button that says "Add Data."

Add your first reading by hand

~25s

Tap Add Data in the top right. A small form appears with three boxes: the number from your meter (in mg/dL), the date, and the time. Type in the number, leave the date and time as the current moment (or tap to change them), and tap Add. The reading saves to the app right away.

Quick Tip

Tap the small clock icon to log a reading from earlier in the day if you forgot at the time.

Tag the reading as before-meal or after-meal

~19s

After adding a number, tap the entry to open it. Tap the field called Meal Time and pick from Before Breakfast, After Breakfast, Before Lunch, After Lunch, Before Dinner, After Dinner, or Bedtime. This tag tells the app which target range to compare against, so the dot shows up the right color on the chart.

Connect a Bluetooth meter or CGM (optional but easier)

~20s

If you own a OneTouch Verio Reflect, Contour Next One, Dexcom G7, or Freestyle Libre 3 Plus, download that brand's app from the App Store. When the app asks for permission to write to Apple Health, tap Turn On All. From then on, every reading flows into the Health app automatically — no typing.

View your trends on the chart

~18s

Back on the Blood Glucose page, tap D, W, M, or Y at the top to see your readings over a Day, Week, Month, or Year. The line chart shows highs, lows, and the average. Tap any dot to see the exact number, time, and meal tag for that reading.

Share a report with your doctor

~27s

From the Blood Glucose page, scroll to the bottom and tap Export All Health Data. The phone makes a PDF with all your readings, charts, and dates. Tap the share icon (the square with an arrow) and pick Mail to email it to your doctor, or Save to Files and upload it to your patient portal at the next visit.

Warning

Do not text or share the PDF over public WiFi. Health data is sensitive — use email through your patient portal whenever you can.

Set a daily reminder to log

~15s

Open the Health app, tap your photo in the top right, then Notifications. Turn on a daily reminder for Blood Glucose at the time you usually test. The phone will buzz a gentle reminder, which helps build the habit during the first month.

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The Health app on your iPhone is a free tool from Apple that comes pre-installed on every iPhone. It has a section called Blood Glucose where you can type in each reading from your meter, or pull readings in from a continuous glucose monitor. Once a few weeks of numbers are in there, the app draws a chart that shows your patterns at a glance — exactly the kind of picture your doctor wants to see.

The app is on the home screen as a white square with a red heart in the corner. If you cannot find it, swipe down on the home screen and type "Health" into the search bar at the top. Apple does not let you delete this app. So it is always there somewhere.

You do not need an Apple Watch or any other gear to use it. A plain iPhone running iOS 17 or newer works. The app is free, and Apple does not sell or share your health data. It stays on your phone unless you choose to share it.

There are three ways to get glucose readings into the app. The first is to type each one in by hand, which works fine if you test two or three times a day. The second is to scan a paper logbook with the camera and let the app read the numbers (a feature added in iOS 18). The third, and easiest, is to pair a Bluetooth meter or CGM and let it send the numbers automatically.

Once you have a few weeks of data, tap the Browse tab, then Blood Glucose. And you will see a graph of your readings over the past day, week, month, or year. The graph color-codes each dot: green for in range, yellow for borderline, red for too high or low. You can tap Share with Doctor to send a PDF straight to your patient portal or email.

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Official Resources

Medicare.gov MedlinePlus — Health Info AARP Health & Technology

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