Abbott
FreeStyle Libre 3
$130-150/month (insurance: $10-40/month)
Back to Devices
Glucose Monitoring
Dexcom
G7 15-Day Continuous Glucose Monitor
Most accurate CGM with 15-day sensor, direct Apple Watch integration, and real-time glucose sharing for caregivers.
$300-400/month (insurance: $20-75/month)
HealthKit Data
Blood Glucose
Requires iPhone (iOS 15.0+)
About This Device
The Dexcom G7 is the most accurate continuous glucose monitoring system available, now with an industry-leading 15.5-day sensor life (launched December 2025). It provides real-time glucose readings every 5 minutes directly to your smartphone and Apple Watch. A major advantage for Apple users is direct Apple Watch integration - you can see glucose readings on your wrist without needing your iPhone nearby. The Dexcom app also supports sharing with up to 10 followers, making it excellent for caregivers. The G7 features a 30-minute warm-up time (fastest in class) and requires no fingerstick calibration. The sensor is small, discreet, and water-resistant. Requires a prescription. Cost varies significantly with insurance coverage.
Pros
- Most accurate CGM on the market
- Direct Apple Watch integration
- 15.5-day sensor life (industry leading)
- 30-minute warm-up time
- Share with up to 10 followers/caregivers
- No fingerstick calibration needed
Cons
- Requires prescription
- Expensive without insurance
- Sensor must be replaced every 15 days
- Requires smartphone for full features
