Freestyle Libre 3 Plus
vs Freestyle Libre 2
Selecting the right Continuous Glucose Monitor is a very important health decision. We compare the precision, comfort, and connection of Abbott's top CGM sensors to help you discover the best fit with advice from your healthcare practitioner.
Quick Answer
Which One Should You Choose?
- Scan to read — manual check
- 14-day sensor wear
- Optional glucose alerts
- Great for new CGM users
- FDA cleared — ages 4 and up
- Automatic readings every minute
- World's smallest CGM sensor
- No scanning required
- Better accuracy — 7.9% MARD
- Real-time alerts to your phone
Full Feature Breakdown
Freestyle Libre 2 vs 3 — Complete Comparison
Every key difference between the two devices — so you can have a fully informed conversation with your doctor.
| Feature | Freestyle Libre 3 Abbott · Newer Model | Freestyle Libre 2 Abbott · Proven Model |
|---|---|---|
| Sensor & Wear | ||
| Sensor Wear Period | 15 days | 15 days |
| Sensor Size | Smallest availableWinner | Small |
| Water Resistance | ✓ Up to 1 meter | ✓ Up to 1 meter |
| Warmup Time | 60 minutes | 60 minutes |
| Glucose Readings | ||
| Reading Method | Automatic — every minuteWinner | Manual scan required |
| Real-Time Readings | ✓ Yes — no scanning | ✗ Scan required |
| Reading Interval | Every 1 minute | On demand (scan) |
| Fingerstick Calibration | ✓ Not required | ✓ Not required |
| Accuracy (MARD) | 7.9%Winner | 9.7% |
| Alerts & Notifications | ||
| High Glucose Alert | ✓ Yes | ✓ Yes |
| Low Glucose Alert | ✓ Yes | ✓ Yes |
| Urgent Low Alert | ✓ Yes | ✓ Yes |
| App & Connectivity | ||
| Smartphone App | ✓ FreeStyle LibreLink | ✓ FreeStyle LibreLink |
| iPhone & Android | ✓ Yes | ✓ Yes |
| Share With Doctor | ✓ LibreView | ✓ LibreView |
| Prescription & Compliance | ||
| Prescription Required | ✓ Yes — Required | ✓ Yes — Required |
| FDA Cleared | ✓ Yes | ✓ Yes |
| HIPAA Compliant Ordering | ✓ Via Dispatch My Meds | ✓ Via Dispatch My Meds |
Note: Both devices are FDA-cleared prescription medical devices. Data based on published Abbott specifications. Consult your doctor before switching or starting any CGM device.
Device Deep Dives
Everything You Need to Know About Each Device
Freestyle Libre 2
A proven, scan-based CGM for adults and children aged 4+ managing Type 1 or Type 2 diabetes. Reliable accuracy with optional real-time alerts.
What is the Freestyle Libre 2?
Abbott offers the Freestyle Libre 2, a continuous glucose monitoring system. A bit sensor attached to the back of your upper arm measures your glucose every minute and can retain up to 8 hours of information. To get readings, scan the sensor with your smartphone or the optional reader device.
No regular fingerstick calibration is required. The gadget also enables optional real-time alerts for high glucose, low glucose, and signal loss, allowing your phone to notify you without requiring a scan. It is FDA-approved for adults and children aged 4 and up.
Pros & Cons
- Proven, reliable accuracy
- No fingerstick calibration
- Optional glucose alerts
- 14-day sensor life
- Works with iOS & Android
- FDA cleared ages 4+
- Must scan to get reading
- No automatic readings
- Slightly larger sensor
- Lower accuracy vs Libre 3
Who is it best for?
Freestyle Libre 3 Plus
Abbott's most advanced CGM. The world's smallest sensor with real-time automatic glucose readings every minute — no scanning needed at any point.
What is the Freestyle Libre 3 Plus?
The Freestyle Libre 3 Plus is the world's smallest CGM sensor and Abbott's most advanced CGM device. It doesn’t need any scanning unlike the Libre 2. Your glucose levels are automatically given to your smartphone every minute of the day, without you doing anything.
It has a MARD of 7.9%, customisable high and low glucose alarms and is fully compatible with iPhone and Android via the FreeStyle LibreLink app, offering increased accuracy over the Libre 2. The sensor is factory calibrated and is ready for use after a 60 minute warm-up time.
Pros & Cons
- Automatic readings every minute
- World's smallest CGM sensor
- No scanning required
- Better accuracy — 7.9% MARD
- Real-time phone alerts
- iOS & Android compatible
- Newer — less long-term data
- Requires compatible smartphone
- May cost slightly more
Who is it best for?
Decision Guide
Which Device is Right for You?
Discuss these points with your doctor before making a decision. Both devices require a valid prescription.
- You are new to CGM and want a simple, easy start
- You prefer checking glucose on your own schedule
- You manage Type 2 diabetes with less intensive monitoring needs
- Your child aged 4+ needs a CGM device
- Your doctor specifically recommends the Libre 2
- You prefer a device with years of proven real-world data
- You want automatic readings without scanning
- You manage Type 1 diabetes and need continuous awareness
- You want the most accurate CGM sensor available from Abbott
- You are active or athletic and want the smallest possible sensor
- You want real-time glucose alerts sent directly to your phone
- You are upgrading from an older CGM system
Common Questions
Freestyle Libre 2 vs 3 — FAQ
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Our team will contact you within 2 business hours. Prescription verified, genuine Abbott products, delivered to all 50 US states.
Medical Disclaimer: The Freestyle Libre 2 and Freestyle Libre 3 are FDA-cleared prescription medical devices. The information on this page is for educational and informational purposes only and does not constitute medical advice. Always consult your licensed healthcare provider before starting, switching, or changing any glucose monitoring device or diabetes management plan. Dispatch My Meds processes all orders in full compliance with HIPAA federal privacy standards. All accuracy data is based on published Abbott specifications.