FreeStyle Libre 3 Plus: Differences, App, Cost, and Availability

When the sensor you rely on every day quietly stops being sold, the clock starts on a decision. That’s where FreeStyle Libre users found themselves in 2024 as Abbott replaced the Libre 3 with the 15-day FreeStyle Libre 3 Plus.

Sensor wear: 15 days · Readings: Every minute, automatically · Sensor size: World’s smallest as of 2024 · Ages: 2 years and older · App: FreeStyle Libre 3 app (iOS/Android)

Six numbers define the FreeStyle Libre 3 Plus, and the pattern is obvious: this is Abbott’s new default sensor, not a specialty option.

The pattern is consistent: Abbott is consolidating the Libre lineup around a 15-day sensor that works with the same app and adds closed-loop support in key markets.

What is the difference between FreeStyle Libre 3 and FreeStyle Libre 3 Plus?

The headline difference is wear time — 15 days instead of 14 — but the real story is what the Plus adds on top: closed-loop compatibility and a clearer path forward as the older sensor is phased out.

Side-by-side comparison

Stripping the two sensors down to the specs that affect a prescription decision:

The implication: the Plus does not ask you to learn a new app, but it does ask you to update a prescription.

Key differences in sensor wear time

Libre 3 (US): 14 days · Libre 3 Plus: 15 days · Sensor changes per year: roughly 26 vs 24

The headline change is wear time: the Plus runs 15 days, while the original Libre 3 was capped at 14 days in the U.S. Abbott’s Irish professional pages already describe the Libre 3 as a 15-day sensor, a reminder that specs can vary by market.

“The world’s smallest 15-day sensor.” — Abbott’s U.S. product page

Across a year, that works out to roughly 24 sensor changes instead of 26 — two fewer insertions, two fewer chances for an insertion error.

Differences in compatibility with closed-loop systems

Diabetes Ireland reports that the Plus works with a hybrid closed-loop system via the mylife CamAPS FX app and the mylife YpsoPump. That matters because a hybrid closed loop adjusts insulin based on glucose readings — the sensor is the data source, so only a compatible sensor can close the loop.

“The FreeStyle Libre 3 Plus sensor is available for people living with diabetes who are eligible for a hybrid closed loop system with the mylife Loop.” — Diabetes Ireland

Differences in app requirements

• Same app: FreeStyle Libre 3 (iOS/Android)
• No separate “Plus” app exists
• LibreLinkUp and LibreView cover remote monitoring and reports

For existing Libre 3 users, the app flow is unchanged: apply the sensor, activate it, and read the numbers. For new users, the same app is the only install you need.

The trade-off: no new app to learn, but the switch still costs a clinician visit, a prescription, and a coverage review before the first Plus sensor goes on.

Why is Libre 3 being discontinued?

Discontinuation sounds dramatic, but Abbott frames it as a product-line consolidation: the Plus sensors exist, so the older sensors step aside.

What Abbott says

• Abbott’s support article says the Libre 3 sensor and the Libre 2 sensor were discontinued after the Plus versions arrived (Abbott Support Center)
• In the U.S., Abbott is replacing both Libre 2 and Libre 3 with Plus versions of each
• In Ireland, the discontinued products are the original FreeStyle Libre sensors, retired at the end of September 2024 — Abbott explicitly says Libre 2 is not affected

So the answer depends on where you live. U.S. users of the Libre 3 are being moved to the Plus. Irish users of the original Libre sensors are being moved, while the Libre 2 remains on the market there.

Impact on current Libre 3 users

• You will need a new prescription for the Plus
• The same app and reader keep working
• Your coverage tier may change when the new prescription is processed

The practical effect is a doctor’s visit and a pharmacy order. The hidden cost is administrative: a new prescription means a new coverage check.

How to transition

1. Request a new prescription from your diabetes team.
2. Confirm the Plus is in stock at your pharmacy or DME supplier.
3. Update the FreeStyle Libre 3 app.
4. Apply the first Plus sensor and verify the readings.

The implication: the discontinuation moves the paperwork burden to the patient — the sensor is easy to replace; the prescription and billing updates are not.

How can I download the FreeStyle Libre 3 Plus app?

There’s no separate “Libre 3 Plus” app to hunt for. The app that runs the Libre 3 is the app that runs the Plus.

Steps to download the app on Android

1. Open the Google Play Store and search for “FreeStyle Libre 3.”
2. Look for the app published by Abbott and tap Install (Google Play (official Android app store)).
3. Open the app, create an account or log in, and keep Bluetooth on.
4. When the Plus sensor arrives, activate it through the app.

Steps to download the app on iOS

1. Open the App Store and search for “FreeStyle Libre 3.”
2. Confirm the publisher is Abbott and tap Download (App Store (official iOS app store)).
3. Log in or register, then follow the sensor activation flow.

Compatible devices and system requirements

• iOS and Android phones with Bluetooth and NFC support
• The app delivers real-time readings without scanning — the sensor transmits every minute
• Your phone needs to stay in Bluetooth range for continuous updates

The catch: the app is the same, but the phone is still part of the system — check the app store’s compatibility list before switching devices.

Do I need to download a new app for the FreeStyle Libre 3 Plus?

No. One app, two sensors.

The same app works for both sensors

Diabetes UK reports that the Plus works with the current FreeStyle Libre 3 app and with LibreLinkUp and LibreView for data sharing. That means alarms, trend graphs and caregiver access stay exactly where they were.

If you already have the app installed

• Keep the app; no separate Plus version exists
• Apply the Plus sensor and activate it exactly as you did with the Libre 3
• Accept app updates when they appear — they may add Plus-specific support

If you’re new to the system

• Download the FreeStyle Libre 3 app from Google Play or the App Store
• Activate the sensor by holding the phone over it
• Set up alarms and share access in the app’s settings

Why this matters: for parents and caregivers, the switch doesn’t reset your setup — the data view, alarms and sharing links stay intact.

How much does the FreeStyle Libre 3 Plus cost?

Pricing is where the Plus gets complicated, because the answer splits into list price, insurance behavior, and Abbott’s own savings programs.

Typical out-of-pocket price

US cash price: around $75 per sensor · Abbott’s pricing claim: less than half of other CGMs · Voucher: $0 copay for eligible patients · Annual cash cost: roughly $1,800

Abbott’s U.S. product page prices the Plus at “less than half the cost of other CGMs,” and its U.S. transition materials say eligible patients may receive a first sensor at a $0 copay under a voucher program.

Insurance, Medicare, and vouchers

Medicare’s coverage guidance for blood glucose monitors and supplies applies to CGM hardware and sensors (Medicare (federal insurance program)). Coverage still depends on the plan’s pharmacy or durable medical equipment benefit.

Abbott’s transition guidance lists retail pharmacies, durable medical equipment suppliers, mail order, and government pharmacies as valid purchase routes with a valid prescription. The catch: eligibility rules and benefit tiers are set by the payer, not by Abbott.

In Ireland, the price picture is different. Irish HCP pages describe Libre 3 as available on prescription and to buy online. If you’re paying out of pocket, ask the pharmacy for the local price before the prescription is sent.

Free trial availability

A true free trial is not the same as a voucher. Abbott’s published U.S. offer is a first-sensor $0 copay for eligible patients, not an open-ended sample program. Confirm the current terms with your pharmacy before counting on a free sensor.

What are common Libre 3 problems?

Problem reports need a reality check: most of the public record still describes the earlier Libre 3, not the Plus. The two share the same app and similar hardware, so some overlap is plausible, but Plus-specific failure data is still thin.

Where the problem reports come from

Insertion errors, Bluetooth drops, and accuracy questions show up in user forums and product reviews for the Libre 3. The Plus has not been on pharmacy shelves long enough to build the same volume of reports. Treat forum claims as anecdotal until the manufacturer publishes error rates for the Plus.

Common sensor errors and app connection issues

• The app warns when Bluetooth is off or the phone is out of range
• Re-opening the app, checking Bluetooth, and restarting the phone covers many connection drops
• If a sensor fails, Abbott’s support center is the official route for a replacement
• No single published list of Plus-specific errors exists yet

Sensor accuracy and calibration

The Libre 3 generation does not require routine fingerstick calibration. If a reading disagrees with symptoms, a fingerstick check is the standard fallback. For Plus-specific accuracy questions, the user manual and Abbott support are the authoritative sources.

Frequently Asked Questions