FreeStyle Libre 2 PLUS vs FreeStyle Libre 3 PLUS
Not sure whether to choose FreeStyle Libre 2 Plus or FreeStyle Libre 3 Plus?
Both systems help you monitor your glucose levels continuously, but there are some important differences in how they work and what they offer. In this guide, we’ll explain those differences clearly so you can decide which option may be right for you.
What Are the FreeStyle Libre 2 & 3 Plus Sensors?
The FreeStyle Libre 2 and 3 Plus sensors are newer generations of Abbott's FreeStyle Libre continuous glucose monitoring systems (CGMs). A continuous glucose monitor tracks your glucose levels around the clock so you can stay aware at all times and make effective decisions about your diabetes treatment.
FreeStyle Libre 2 vs FreeStyle Libre 2 Plus
The FreeStyle Libre 2 sensor is an older model that’s been discontinued. If you’re using it, you’ll be expected to move to the FreeStyle Libre 2 Plus sensor.
The FreeStyle Libre 2 Plus sensor is the updated version of the FreeStyle Libre 2 system.
You can wear the FreeStyle Libre 2 Plus sensor for up to 15 days. It works with the LibreLink app and the Libre 2 reader, making the transition smoother for many users.
Buy FreeStyle Libre 2 Plus Sensor Safely and Securely
FreeStyle Libre 2 Plus is a 15-day continuous glucose monitoring sensor that sends real-time readings to your smartphone or optional reader. It helps you track glucose levels without routine finger-prick tests.
FreeStyle Libre 3 vs FreeStyle Libre 3 Plus
The FreeStyle Libre 3 Plus is the most recent generation of the FreeStyle Libre 3 sensor system. It’s designed to provide real-time readings (once a minute) to your compatible smartphone or reader, with a 15-day wear time.
Buy FreeStyle Libre 3 Plus Sensor Safely and Securely
The FreeStyle Libre 3 Plus continuous glucose monitoring sensor helps you spot trends, highs, and lows without routine finger-prick tests. It sends real-time glucose readings to your smartphone every minute, giving you full visibility into your diabetes management.
Libre 2 Plus vs FreeStyle Libre 3 Plus
Both are CGMs, but the Libre 3 Plus is often described as the more “streamlined” real-time experience because it’s built around sending readings to your phone continuously (without you having to do anything once it’s started).
Alarms are optional for both systems, but the Libre 3 Plus alarms can work when your sensor is within 33 feet (about 10 metres) unobstructed. On the other hand, Libre 2 Plus alarms can work when your sensor is within 20 feet (about six metres) unobstructed.
Your clinician (or prescriber) can help you decide based on your type of diabetes and treatment plan.
How Do Glucose Monitoring Systems Work?
A CGM system tracks your glucose (sugar) levels throughout the day and night, without requiring frequent finger-prick tests.1
CGMs usually consist of:
- A small sensor you wear on your skin, usually on your upper arm
- A tiny filament that sits just under your skin
- An app or reader that shows your results
Your sensor measures glucose in interstitial fluid. That’s the fluid that sits around your body’s cells, just under your skin. It’s not the same as a blood drop from a finger-prick test, so the numbers can sometimes look a bit different.
It takes regular measurements and sends the readings to your phone app or reader via Bluetooth. This allows you to see:
- Your current glucose levels
- Whether it’s going up or down (trend arrows)
- A graph showing your recent history
Benefits of Using a Glucose Monitoring System
Using a continuous glucose monitoring system allows you to:
- Notice patterns (like regular highs after breakfast, or low readings overnight)
- Understand the factors that affect your glucose levels, such as meals, activity, stress and medications
- See how often your glucose stays in your target zone and how often it falls outside this zone
- Feel more confident making treatment decisions for your diabetes because you have full visibility of your overall diabetic health
FAQs
When were FreeStyle Libre 2 & 3 discontinued?
In the UK, the FreeStyle Libre 2 and the FreeStyle Libre 3 sensors were discontinued at the end of August 2025. They were replaced with the FreeStyle Libre 2 Plus and the FreeStyle Libre 3 Plus, respectively.
Do FreeStyle Libre 2 Plus or 3 Plus have a mobile app?
Yes, each sensor has an app you can install on your smartphone. You can use your FreeStyle Libre 2 Plus sensor with the LibreLink app, and you can use the FreeStyle Libre 3 Plus sensor with the Libre 3 app.
Alternatively, you can use the optional readers.
Do I need a prescription for FreeStyle Libre 2 Plus or FreeStyle Libre 3 Plus?
To get the FreeStyle Libre 2 Plus or the FreeStyle Libre 3 Plus sensor on the NHS, you’ll need a prescription from an NHS medical professional. Otherwise, you won’t need a prescription. You’ll need to speak with a healthcare professional to confirm it’s right for you.
How much do FreeStyle Libre 2 Plus & 3 Plus cost?
The cost of the FreeStyle Libre 2 Plus and FreeStyle Libre 3 Plus can vary depending on where you purchase them.
At The Independent Pharmacy, prices start from £51.99 for the FreeStyle Libre 2 Plus and £69.99 for the FreeStyle Libre 3 Plus, offering a convenient and accessible way to get your sensors, with professional support included.
If you’re eligible through the NHS, you may also be able to get these sensors for the standard prescription fee.
Where can I purchase FreeStyle Libre 2 Plus or 3 Plus?
You may be able to purchase these sensors through regulated online pharmacies, such as The Independent Pharmacy. This ensures you receive genuine products, access to professional support and guidance to help you choose the most suitable option for your needs.
Conclusion
The FreeStyle Libre 2 Plus and Libre 3 Plus both help you see your glucose trends more clearly, with optional alarms and up to 15 days of wear time. The best choice usually depends on which Libre system you use now, which devices you prefer (app or reader) and what you’re eligible for through the NHS.
If you want to switch to a Plus sensor (or are unsure which one best fits your needs), you can complete a short online consultation. A UK-registered prescriber can review your information and advise whether it’s suitable for you, and what to do next.
