Dexcom G7 vs FreeStyle Libre 3 Plus
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 Plus
Sensor Technology
| Specification | Dexcom G7 | FreeStyle Libre 3 Plus |
|---|---|---|
| Sensor Type | Dexcom G7 | Abbott FreeStyle Libre 3 Plus |
| Accuracy (MARD) | Not published by Dexcom | Not published by Abbott |
| Reading Frequency | Every 5 min | Every minute |
| Warm-up Time | 30 min | 60 min |
| Wear Time | 10.5 or 15.5 days (two SKUs) | 15 days |
| Water Resistance | Yes (24ft/2h) | Yes (1m, max 30 min) |
App Features & Coaching
| Feature | Dexcom G7 | FreeStyle Libre 3 Plus |
|---|---|---|
| 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 Plus
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
Dexcom publishes no cash price anywhere, only discounts and coverage claims, so no single price is listed here. Third-party pharmacy data puts retail near $500 for a 30-day sensor supply, or roughly $270 with Dexcom's own coupon, and most people with CGM coverage pay $20 or less. Dexcom's own pages currently disagree with each other on the discount ($230 vs $210). Two SKUs now sell side by side: the classic G7 (10.5-day wear, 3 sensors per 30-day supply) and G7 15 Day (15.5-day wear, 2 sensors per supply) at similar prices, so per-sensor economics differ sharply. Sold as 30/60/90-day pharmacy fills rather than a subscription, and the coupon is capped at 12 redemptions a year. Patient Assistance can reduce this to $45 per 90-day supply for income-qualified patients.
FreeStyle Libre 3 Plus Details
Now sold as the FreeStyle Libre 3 Plus: Abbott's US product page describes only the Plus, and the original 14-day Libre 3 is gone, so accuracy figures published for that earlier sensor do not carry over. Abbott publishes no cash price, so none is listed here. Abbott's only published figures are that most covered patients pay $0-$20, and that commercially insured or uninsured patients asked to pay over $75 for two sensors should use the copay card - an effective ceiling near $900/year for eligible patients. The copay card excludes Medicare, Medicaid and other federal or state programme beneficiaries. Supply is two 15-day sensors per 30-day pharmacy fill. Water resistant to 1 metre for up to 30 minutes, notably weaker than several competitors.
Ready to Choose?
Based on this comparison, select the CGM service that best fits your health goals