Apple Watch Set to Include Third-Party Glucose Tracking App at Launch

Medical device manufacturer DexCom over the weekend announced the company is developing an app for the upcoming Apple Watch that will display all of a user's glucose and blood sugar-related health data on their wrist (via The Wall Street Journal).

The company, whose expertise lies in "continuous glucose monitoring systems for diabetes management," says the app is expected to be ready when the Apple Watch launches in April. The app would sync to existing monitors manufactured by DexCom that use a "hair's width sensor" located under the user's skin to measure and report blood glucose levels every five minutes, a more seamless process than traditional skin-prick glucose monitors, according to the company.

dexcomwatch
Though most health-related apps have been closely scrutinized by the FDA in the past, The Wall Street Journal reports DexCom and a group of developers behind another diabetes-related application called NightScout have convinced the FDA to change course on health apps.

The group’s effort challenged the slow pace of innovation and regulatory approval in the field. It also highlighted the growing role that Silicon Valley companies and software developers hope to have in monitoring and maintaining people’s health.

Previously, the FDA considered glucose monitors and any associated software to be Class III medical devices, meaning they received the highest level of regulatory scrutiny. But the spread of NightScout, the system developed by the group of software engineers, and DexCom’s submission of a separate iPhone app for review prompted the FDA to change course last month.

Subsequently, DexCom's monitors that require injection under a patient's skin will understandably remain Class III devices but the software that displays the data - such as the Apple Watch app - now only needs to be registered with the FDA without prior marketing approval. Alberto Gutierrez, director of the FDA’s Office of In Vitro Diagnostics and Radiological Health, evoked the positive benefits of the app far outweigh any negatives, “We felt that the risks that the app imposed weren’t as high."

Apple itself has been steadily moving towards a more health-concerned future, with the introduction of the Health app into iOS 8 as a preparation for the upcoming built-in fitness integration features of the Apple Watch. Major U.S. hospitals are rolling out their own trial programs with HealthKit, Apple's tools that leverage the iPhone's various motion-tracking sensors and peripheral accessories to track and log the history of a user's health data.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

iOS 26.3 Beta 1 Features: What's New So Far

Monday December 15, 2025 4:23 pm PST by
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas. We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features. Transfer to Android Apple is making it simpler...
iOS 26

Apple Releases iOS 26.2 With Alarms for Reminders, Lock Screen Changes, Enhanced Safety Alerts and More

Friday December 12, 2025 10:10 am PST by
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. ‌iOS 26‌.2 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...

Top Rated Comments

mrgraff Avatar
142 months ago
Where do you get the sensor implanted under your skin? At the Apple store?

That's where I got my Apple Pay barcode tattoo.
Score: 9 Votes (Like | Disagree)
mikemj23 Avatar
142 months ago
Sadly, this is only tracking software. My meter does this already, and my doctor downloads the data from it. I don't see this changing anytime soon, considering medical devices have soooooo much regulation.
The Dexcom system is not just tracking software. It's a Continuous Glucose Monitor (CGM) via a sensor the user implants under the skin that reads your BG every 5 min.

----------

Where do you get the sensor implanted under your skin? At the Apple store?
No LOL - the user implants the sensor. FDA says to change it every 7 days but I typically get 20+ days out of mine. The Apple Watch and the Dexcom system are mutually exclusive. What is being integrated is the option for the transmitter to send the data now to other devices (i.e. Apple Watch, Android phones etc) and not just the receiver we all have currently to see the data.
Score: 6 Votes (Like | Disagree)
AppleScruff1 Avatar
142 months ago
Where do you get the sensor implanted under your skin? At the Apple store?
Score: 6 Votes (Like | Disagree)
JeffyTheQuik Avatar
142 months ago
Here's your quandary.
You're diabetic. You have a blood glucose test unit for £10.00

You can continue using it like you always have done or spend £400 on a watch(!) to do the same thing.

Or.

You're not diabetic. But have a sudden interest in monitoring your blood sugar or other people's - now the Apple Watch has come out.

Either way. Go for the former option. Honestly. It'll save you much money. £390 more money. Sorted! Next problem?
Here's another quandary:

You're not a diabetic, so your pancreas works, and you have a closed loop system to control your blood sugar. You decide, tonight, to eat a piece of cake with 39g of carbohydrates, and then go to sleep. You wake up, and your blood sugar is 72 +/- 10 mg/dl.

or

You are a T1 diabetic, and so you have to do all of those calculations in your head, or your insulin pump, but in the interest of saving money, you use shots and regular/NPH insulin, instead of a pump ($7000, plus $40/week in supplies and insulin) and a CGM ($1400, plus $50/week), supplied by Dexcom, since Apple isn't making a CGM, just a watch to see the results of that CGM on the watch. You wake up (or not) with blood sugar between 30 and 400, because your carb:insulin ratio didn't take into account the stress you had remembering the foxtrot on the dance floor, the dawn effect, the syringe you used didn't have the resolution needed to give yourself 4.8 units, or that the NPH kicked in after the sugar wore off of that cake, or some reason you didn't take into account, like over/underestimating the carb/fat/protein ratios and the glycemic index of that cake and your body.

Oh yeah, that 10 quid was for the meter. The test strips are still $1/ea for the OneTouch Brand. The meter companies don't lose money, and the meter is a loss leader. Ever try to get the Bayer meter to read a OneTouch Strip?

Come over to my house. I'll let you walk a mile in my shoes.

NOTE: Bruce did apologize for his post. My apologies for this rant after his apology.
Score: 4 Votes (Like | Disagree)
mikemj23 Avatar
142 months ago
Great...you've identified a feature/benefit that a vast majority of the population will never use. That's not going to be the way to sell me the watch.

Agree that this doesn't apply to the majority of folks out there (thankfully) but it's not really a "feature" of the watch. It's basically just another app. Even if I don't buy an Apple Watch the integration with my iPhone is still very exciting news for CGM users.

If you had a dead pancreas you would understand :)
Score: 4 Votes (Like | Disagree)
mikemj23 Avatar
142 months ago
:D All joking aside, how do you insert the sensor under your skin?

No worries and I laugh about this stuff all the time. Type 1 (Juvenile Diabetes) is pain in the ass but there are a lot of other folks a lot worse off than me.

There is an insertion device that comes with each sensor. Basically the sensor is wrapped around a needle which is inserted under the skin and then the needle is removed just leaving the sensor embedded. Very cool stuff and useful BG trending information for us.
Score: 4 Votes (Like | Disagree)