The Dexcom ONE+ is the company’s latest continuous glucose monitoring (CGM) system, designed to make CGM technology more accessible to more people. It shares the same compact form factor as the Dexcom G7 — small, lightweight, and easy to apply — but with a simpler feature set and a lower cost.
Dexcom created ONE+ as an upgrade to the original Dexcom ONE, which was already known for its simplicity. The ONE+ builds on that with a faster 30-minute warm-up time, an integrated sensor and transmitter, and can be worn on the back of the arm. The system also includes a 12-hour grace period after the sensor session ends — offering extra flexibility for users who can’t change sensors right away.
Like other Dexcom systems, the ONE+ provides continuous glucose readings sent directly to your smartphone or receiver, with customizable high and low alerts. It’s factory-calibrated, though users can still enter manual calibrations if they prefer. However, compared to the G7, the ONE+ has limited connectivity — it’s not designed for insulin pump automation or integration. Instead, it focuses on providing accurate glucose data for people with type 1 or type 2 diabetes who want a straightforward, reliable CGM without added complexity.
In our conversation with Dexcom’s Jake Leach, he shared that 15-day weartime is expected in the future for the Dexcom ONE+, similar to what’s coming to the G7 later this year. That update will further reduce costs and make CGM use more convenient.
The Dexcom ONE+ isn’t for everyone — if you’re using an automated insulin delivery system, the Dexcom G7 remains the better fit. But for many people who just need real-time glucose tracking, accurate alerts, and a simple setup, the ONE+ brings powerful technology within reach.
Watch the full discussion with Dexcom at the top of this page to learn how the ONE+ compares to other CGMs and where it fits in the growing Dexcom lineup.
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