Dexcom and Abbott's FreeStyle Libre are two of the most popular continuous glucose monitor (CGM) families. Both can transform daily diabetes management — and the "best" one really depends on your routine, preferences, and what your doctor recommends. Here's a balanced way to think about the choice.
What they have in common
Both use a small sensor worn on the body to track glucose throughout the day and night, show trends rather than single readings, and send data to a smartphone (and often a smartwatch or separate reader). Both can help reduce routine fingersticks and make patterns easier to see for you and your care team.
Features worth comparing
- How you see readings: some systems stream continuously to your phone/watch, while others have historically emphasized on-demand scanning. Newer generations of both families have moved toward real-time updates.
- Alerts: consider whether you want customizable high/low alarms and "urgent low" warnings.
- Sensor wear time: how often you'll change the sensor varies by model.
- Sharing: look at how easily a caregiver or clinician can follow your data remotely.
- Device compatibility: check that the system works with your phone and any insulin devices you use.
- Comfort & placement: sensor size and wear location can be a personal preference.
Questions to ask your doctor
- Which system fits my treatment plan and any insulin therapy I use?
- Do I want or need real-time alarms?
- Which is supported by my phone and my preferred way of viewing data?
- Which is covered under my insurance, and what will it cost?
The bottom line
There's no single winner — both Dexcom and FreeStyle Libre help people manage diabetes more confidently. The right pick is the one that matches your lifestyle and that your provider recommends. Want a refresher on how CGMs work first? Read Continuous Glucose Monitors, Explained.
How we help
Quantum Medical supplies leading CGM systems and makes getting started easy: we verify your coverage, coordinate the prescription with your doctor, and remind you when it's time to reorder sensors so you don't run out. See our glucose monitors page to learn more.