Freedom and flexibility: Dexcom G7 and Apple Watch transform diabetes management

The world of diabetes management just took a significant leap forward. Dexcom, a global leader in continuous glucose monitoring (CGM), has introduced a highly anticipated feature for its G7 sensor—direct-to-Apple Watch connectivity, eliminating the need for a nearby iPhone. The feature is now live in the United States, United Kingdom, and Ireland, with more regions expected to gain access in the coming weeks.

This development marks a milestone for wearable health technology. For the first time, CGM users can monitor blood glucose levels on their Apple Watch independently, receiving real-time updates and alerts, even if their iPhone is not within range. It’s a feature that patients, clinicians, and tech watchers alike have long awaited—and one that places Dexcom ahead in the increasingly competitive digital health space.

What the direct-to-watch feature means for users

Previously, Dexcom users could view glucose data on an Apple Watch using the G6 or G7 app, but the watch needed to be within Bluetooth range of a paired iPhone, approximately 33 feet. The iPhone acted as a bridge between the CGM and the watch, which posed limitations. If the phone was left behind or ran out of battery, users lost access to live glucose data and alert notifications.

Now, thanks to dedicated Bluetooth connectivity, the Dexcom G7 can transmit data directly to an Apple Watch, no middleman required. This is especially valuable for users who want to move freely—jogging, working out, or attending events—without having to carry a phone at all times.

More freedom and discretion for daily life

For people living with diabetes, constant glucose monitoring is a reality. With direct-to-watch functionality, users gain a new level of independence and privacy. No longer tethered to their phones, they can discreetly check their levels during meetings, workouts, or social events with just a glance at their wrist.

The feature supports Apple Watch Series 6 or later running watchOS 10 or higher. Users must also install version 2.1 or later of the Dexcom G7 app on an iPhone running iOS 17 or later for the initial setup. Once configured, the system allows real-time glucose readings and alerts to be delivered to the watch directly.

Dexcom COO Jake Leach described it as one of the most requested features among users: “We’ve long believed that people with diabetes should be able to view their CGM data where and how they choose. Direct to Apple Watch is a testament to that.”

Dexcom G6 vs. G7 watch integration

While the new feature is a leap forward, it builds on years of development with previous models like the Dexcom G6. The G6 app already allowed users to view CGM data on the Apple Watch, but the system required proximity to a connected iPhone. It also had limitations in refresh rates, due to Apple’s restrictions on third-party app background refreshes and complication updates.

Even when properly configured, G6 users occasionally saw “—” instead of glucose readings due to delayed syncing. Alerts and alarms also didn’t trigger unless the iPhone was within Bluetooth range. While still useful, it wasn’t a true independent solution.

With the update to the G7, users now have the ability to view their glucose data across multiple devices simultaneously. This includes Apple Watches, iPhones, Android smartphones, Dexcom receivers, and certain connected insulin delivery systems, providing greater flexibility in how and where users monitor their glucose levels.

This flexibility makes it easier for users to choose how and where they want to monitor their glucose trends, personalize alert settings, and maintain control over their health.

How the G7 improves overall diabetes management

The direct-to-watch update is more than just a convenience—it enhances the way diabetes is managed day-to-day. The G7 sensor provides updates every 5 minutes, offering a nearly continuous stream of glucose data. Users can monitor both short-term and long-term trends with glanceable visuals and customizable alerts.

One of the biggest advantages of the G7 system is its compatibility with Apple’s Health app. Glucose data is synced with other health metrics like sleep tracking, exercise, and heart rate, creating a more complete picture of a user’s overall well-being. This integrated approach allows users to identify patterns, such as a post-exercise dip in glucose, and adjust their routines accordingly.

Data can also be shared with caregivers or healthcare providers. With proper permissions, parents of children with Type 1 diabetes or spouses supporting a loved one can receive alerts, improving safety and peace of mind. Many healthcare systems now support digital integration, allowing medical professionals to review CGM data remotely during consultations.

Impact on wearables and health tech

This move places Dexcom at the forefront of integrating medical-grade devices with consumer tech. As wearable tech advances, companies are pushing to create non-invasive methods for monitoring blood sugar, blood pressure, and other vital signs in real time.

Apple has been rumored to develop non-invasive blood glucose monitoring for its smartwatches, with patents suggesting the use of optical sensors that bypass skin-penetrating technology. Competitors, like Samsung, are also believed to be making strides in similar innovations.

Until these features become standard in smartwatches, the latest Dexcom upgrade offers a nearly seamless experience combining medical accuracy with consumer convenience.

Who benefits from Direct to Apple Watch: This feature is especially beneficial for active users who exercise or travel frequently and prefer not to carry a phone, children and teens managing diabetes with help from caregivers, older adults who may find phones cumbersome but can easily check a watch, and anyone seeking more discreet and flexible health monitoring.

What you’ll need to get started: To use the new direct-to-watch function, users need a Dexcom G7 CGM system, Apple Watch 6 or later, running watchOS 10+, iPhone running iOS 17+ (required only for initial setup), and Dexcom G7 app version 2.1 or later.

The feature is currently available in select markets but expected to expand soon.

What’s next for glucose monitoring

The future of glucose monitoring could involve even more advanced tools that don’t require wearable transmitters. Researchers are exploring options like smart tattoos and optical sensors in watches or bands to make monitoring less intrusive and more automatic. For now, the Apple Watch integration with Dexcom G7 remains one of the most user-friendly solutions available.

By connecting directly to the Apple Watch, Dexcom’s G7 sensor removes the need for an iPhone, offering users more freedom and flexibility in managing their health. This shift towards seamless health technology marks a key step in the evolution of diabetes management.

As technology and health continue to merge, innovations will bring real-time data directly to users’ wrists, making health monitoring more accessible anytime, anywhere.