HEAD-TO-HEAD COMPARISON
Dexcom G7 Continuous Glucose Monitor vs Abbott FreeStyle Libre 3
We compare the Dexcom G7 Continuous Glucose Monitor and Abbott FreeStyle Libre 3 head-to-head on performance, features, value, and more. Here's which one wins.
Best Overall
Dexcom G7 Continuous Glucose Monitor
Best CGM for diabetics and health-conscious users
Overall:9.2/10
Check price on Amazon Best Value CGM
Abbott FreeStyle Libre 3
Best affordable CGM with 14-day sensor life
Overall:9.2/10
Check price on Amazon Score Breakdown
| Dexcom G7 Continuous Glucose Monitor | Category | Abbott FreeStyle Libre 3 |
|---|---|---|
| 9.8/10 ✓ | Performance | 9.5/10 |
| 9.5/10 ✓ | Features | 9/10 |
| 9/10 | Ease of Use | ✓ 9.2/10 |
| 7.5/10 | Value | ✓ 9/10 |
| 9.2/10 | Overall | 9.2/10 |
Specs Comparison
| Dexcom G7 Continuous Glucose Monitor | Spec | Abbott FreeStyle Libre 3 |
|---|---|---|
| 10 days per sensor | Sensor Life | 14 days per sensor |
| 30 minutes — fastest in class | Warm-Up | Smallest CGM sensor available |
| MARD 8.2% — most accurate consumer CGM | Accuracy | Real-time continuous glucose with alerts |
| Customizable high and low glucose alerts | Alerts | MARD 7.9% — excellent accuracy |
Dexcom G7 Continuous Glucose Monitor
Pros
- + 8.2% MARD — most accurate consumer CGM
- + 30-minute warm-up — fastest available
- + 60% smaller sensor than previous generation
Cons
- − Requires prescription in the US
- − 10-day sensor life means frequent changes
- − Insurance coverage varies — expensive without coverage
Abbott FreeStyle Libre 3
Pros
- + 14-day sensor life — longest available
- + Smallest sensor size — nearly invisible
- + 7.9% MARD — marginally more accurate than Dexcom
Cons
- − Sensor adhesive can cause skin irritation in some users
- − Less robust alert system than Dexcom
- − App is less polished than Dexcom's
Read the full Best CGM Monitors 2026 guide for complete reviews of all 3 products.