Dexcom G7 vs FreeStyle Libre 3
CGM Head-to-Head Comparison
Compare pricing, sensor technology, app features, and coaching support to find the best CGM for your goals
Quick Comparison Summary
Pricing & Plans Comparison
Dexcom G7
FreeStyle Libre 3
Sensor Technology
| Specification | Dexcom G7 | FreeStyle Libre 3 |
|---|---|---|
| Sensor Type | Dexcom G7 | Abbott FreeStyle Libre 3 Plus |
| Accuracy (MARD) | 8.2% | 7.9% |
| Reading Frequency | Every 5 min | Every minute |
| Warm-up Time | 30 min | 60 min |
| Wear Time | 10 days + 12h grace | 15 days |
| Water Resistance | Yes (24ft/2h) | Yes |
App Features & Coaching
| Feature | Dexcom G7 | FreeStyle Libre 3 |
|---|---|---|
| Coaching Type | None (device only) | None (device only) |
| Food Logging | No | Notes only |
| Scoring System | None | Time in range |
| App Integrations | Apple Health, Apple Watch, Garmin, Levels | Apple Health, LibreLinkUp |
| Prescription Required | Yes | Yes |
| HSA/FSA Eligible | ✓ Yes | ✓ Yes |
Key Features
Dexcom G7
Best for: Highest accuracy and real-time alerts
Key features: Real-time glucose, alerts, trend arrows, Clarity reports
Not recommended for: Casual metabolic curiosity (cost and prescription barrier)
FreeStyle Libre 3
Best for: Lower-cost medical-grade CGM with longest wear
Key features: Real-time glucose, optional alarms, LibreView reports
Not recommended for: Those wanting integrated coaching
Dexcom G7 Details
Consensus medical-grade accuracy leader. Cash price varies widely by pharmacy:roughly $300-450/mo for a 3-sensor supply, listed as high as $579. Dexcom pharmacy savings program cuts standard cash price by over 50%. Usually covered by insurance for insulin users.
FreeStyle Libre 3 Details
Retail cash price around $241/mo for two 15-day sensors. Abbott savings programs and pharmacy discount cards can bring this substantially lower. The OTC Lingo sensor is built on this same platform.
Ready to Choose?
Based on this comparison, select the CGM service that best fits your health goals