Dexcom vs. FreeStyle Libre: Which CGM Is Right for You?

Continuous Glucose Monitors (CGMs) have revolutionized the way people with diabetes track and manage their blood sugar levels. Two of the most popular CGMs on the market today are Dexcom and FreeStyle Libre. But which one is right for you?

In this post, we’ll break down the features, accuracy, cost, wear time, and convenience of both systems to help you make an informed decision.

🔍 What Is a CGM?

A Continuous Glucose Monitor tracks your blood glucose levels 24/7 through a small sensor inserted under the skin. It allows people with Type 1, Type 2, or gestational diabetes to monitor glucose in real-time — no finger pricks required (mostly)!

📦 Quick Comparison Table

FeatureDexcom G6/G7FreeStyle Libre 2/3Sensor Wear Time10 days (G6), 10 days (G7)14 daysCalibration Needed?NoNoReal-Time Readings?Yes (automatic updates)Libre 3: Yes, Libre 2: Requires scanSmartphone App?Yes (Apple & Android)Yes (Apple & Android)Accuracy (MARD)~8.2% (G6), ~8.7% (G7)~9.2% (Libre 2), ~7.9% (Libre 3)Alerts/AlarmsCustomizable, predictiveLibre 2 & 3: Yes (real-time)Insurance CoverageWidely acceptedWidely acceptedPrice (without insurance)~$300/month~$130–$200/month

📱 Dexcom Overview

Dexcom G6 and G7 are known for:

• Automatic real-time updates every 5 minutes

• Great for people who want predictive alerts before highs or lows

• Excellent integration with Apple Watch, Tandem insulin pumps, and other smart devices

• Very user-friendly app with trend arrows and data sharing

💡 Best for:

• People with Type 1 diabetes or those on insulin

• Parents of children with diabetes (remote monitoring)

• Those who want smart alarms & predictive alerts

📡 FreeStyle Libre Overview

Libre 2 and Libre 3 are budget-friendly options from Abbott:

• Libre 2 requires a scan with your phone or reader

• Libre 3 offers real-time automatic glucose readings

• Both are very slim and discreet, especially Libre 3

• Libre 3 is one of the smallest CGMs ever made

💡 Best for:

• People with Type 2 diabetes not on insulin

• Budget-conscious users

• Those who want a simple and discreet device

💰 Cost Comparison

• Dexcom (G6/G7)
  Without insurance: ~$300/month for sensors and transmitters
  With insurance: Varies depending on coverage, co-pays apply

• FreeStyle Libre (2/3)
  Without insurance: ~$130–$200/month
  With insurance: Often lower co-pays, some plans cover it fully

📌 Pro Tip: If you have extra CGMs, you might be able to sell unused supplies for cash — a great way to reduce costs and prevent waste.

🏁 Which One Should You Choose?

Choose Dexcom if:

• You want real-time alerts and predictive warnings

• You use an insulin pump or take insulin multiple times a day

• You need to share data with family or a healthcare team

Choose FreeStyle Libre if:

• You’re looking for a more affordable CGM

• You prefer a smaller, lighter sensor

• You don’t mind scanning (Libre 2) or want real-time data (Libre 3)

📣 Final Thoughts

Both Dexcom and FreeStyle Libre offer incredible tools to help you take control of your diabetes. The best choice depends on your personal needs, lifestyle, insurance coverage, and how involved you want to be in tracking your glucose.

Have you tried either one? Let us know in the comments — or feel free to reach out if you need help navigating CGM options, supplies, or insurance tips.