Can You Use The FreeStyle Libre 2 Reader With The FreeStyle Libre 3?

In our latest question and answer, the pharmacist discusses whether or not the FreeStyle Libre 2 reader is compatible with the FreeStyle Libre 3 system.


Hello, I am using the FreeStyle Libre 2 with a reader, not a phone. Will the reader also work with the FreeStyle Libre 3? I understand both systems are about the same price. Thank you!

Asked by xray On Oct 13, 2022

Answered by
Medical Content Reviewed By HelloPharmacist Staff

Published Oct 13, 2022
Last updated Jul 18, 2024

Key points

  • The FreeStyle Libre 3 does not use a standalone reader. It connects to your phone to transfer your blood sugar readings.
  • The standalone reader that comes with the FreeStyle Libre and FreeStyle Libre 2 will not work with the FreeStyle Libre 3.


The Freestyle Libre 3 system does not come with a standalone reader (unlike the other FreeStyle Libre systems), but rather, connects to your smartphone to transfer your blood sugar readings. Unfortunately, the FreeStyle Libre 2 reader does not work with the FreeStyle Libre 3 system and there is no standalone reader available for FreeStyle Libre 3.

According to the manufacturer (Abbott), the FreeStyle Libre 3 sensors only work with the smartphone app, and, again, will not connect the reader of either the FreeStyle Libre 2 or FreeStyle Libre. Per Abbott:

The FreeStyle Libre 3 Sensor is compatible only with the FreeStyle Libre 3 app.
Abbott - FreeStyle Libre 3 FAQ

It is important to specify here that you must use the FreeStyle Libre 3 app with the FreeStyle 3 system. The FreeStyle Libre 2 app is not compatible (nor is the reader, as mentioned).

FreeStyle Libre 2 and Libre 3 app not compatible with different systems

What About The LibreLinkUp App?

The LibreLinkUp app, which allows caregivers and other individuals to receive glucose data and alarms of connected individuals using the FreeStyle Libre 3 sensor, is compatible with the FreeStyle Libre 3 system.

Final Words

I hope this answer helped and I'm sorry to deliver the bad news that your reader from the Freestyle Libre 2 system won't work with the Freestyle Libre 3!

We wrote a more comprehensive comparison of the two different systems (which can be found here) if you are interested.


  • FreeStyle Libre 3 Manufacturer Website, Abbott
  • FreeStyle Libre 3 FAQ, Abbott

About the Pharmacist

Dr. Brian Staiger, PharmD

Dr. Brian has been practicing pharmacy for over 13 years and has wide-ranging experiences in many different areas of the profession. From retail, clinical, program development, and administrative responsibilities, he's your knowledgeable and go-to source for all your pharmacy and medication-related questions! Dr. Brian Staiger also has herbalist training and educational certificates in the field of medical ethnobotany. Feel free to send him an email at [email protected]! You can also connect with Dr. Brian Staiger on LinkedIn.

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