FAQs

LibreLinkUp^1,4 is a free mobile app that allows family, friends, and caregivers to receive glucose data from Connections who use a FreeStyle Libre^2,3 app with a FreeStyle Libre sensor.

Once you have installed the LibreLinkUp app and accepted an invitation from a FreeStyle Libre app user to connect, you will receive their glucose data on your smartphone.

LibreLinkUp users who are following Connections that are using FreeStyle Libre 2 or FreeStyle Libre 3 system sensors and a FreeStyle Libre app can also receive glucose alarm data and notifications^{5, 6, 7}.

The FreeStyle Libre app is designed to be used by people with diabetes to carry out routine glucose monitoring using a smartphone and a FreeStyle Libre sensor .

The LibreLinkUp app is designed to be used by family, friends, and caregivers. The app enables them to receive glucose data or glucose alarms on their smartphone. The LibreLinkUp app cannot be used to scan FreeStyle Libre sensors.

The LibreLinkUp app should not be used for treatment or dosing decisions. Consult the glucose monitoring system and/or a healthcare professional before making treatment decisions.

The LibreLinkUp app is NOT intended to be used in a clinical setting nor by clinicians to monitor their patients.

Users ages 18+, or such other age as local law defines as an adult, can create an account in the LibreLinkUp app.

When the FreeStyle Libre app receives glucose data from the FreeStyle Libre sensor, it transmits the glucose data to the LibreView cloud. The FreeStyle Libre app allows the FreeStyle Libre user to invite family, friends, and caregivers to receive glucose data. These family, friends, and caregivers can install the LibreLinkUp app on their phone, accept the sharing invitation, and then view glucose data and receive glucose notifications from their Connections.

The LibreLinkUp app allows caregivers to connect with up to twenty (20) FreeStyle Libre app users. Likewise, FreeStyle Libre app users can share glucose data with up to twenty (20) LibreLinkUp app users.

You can view your Connection’s latest glucose reading and trend arrow, which shows the direction the glucose is heading.

For LibreLinkUp users who are following Connections that are using FreeStyle Libre 2 system sensors and a FreeStyle Libre app, you can also receive shared glucose alarm notifications whenever your Connection receives a glucose alarm.

For LibreLinkUp users who are following Connections that are using FreeStyle Libre 3 system sensors and a FreeStyle Libre app, you can also receive LibreLinkUp-set glucose alarm notifications based on your Connection’s glucose readings.

All LibreLinkUp users will not receive:

• Information about unsuccessful scans or scan errors
• Notes about insulin, food, etc.
• In some instances, the trend arrow may not always appear with the reading

If you are following Connections that are using FreeStyle Libre 2 or FreeStyle Libre 3 system sensors will also NOT receive:

• Signal loss alarm notifications (whenever your Connection loses signal with their FreeStyle Libre sensor)

It depends on several factors, including the Internet connectivity and network speed of both the FreeStyle Libre app user and the LibreLinkUp app user. With Internet connectivity in place for both users, LibreLinkUp app users generally see glucose data from their Connections within seconds.

You will receive glucose data every time your Connection scans their FreeStyle Libre or FreeStyle Libre 2 system sensor successfully with their FreeStyle Libre mobile app.

However, if your Connection scans their FreeStyle Libre or FreeStyle Libre 2 system sensor with a FreeStyle Libre reader instead of their smartphone, you will not receive glucose data from that scan. The FreeStyle Libre readers are not Internet-enabled devices and cannot be used to share glucose data in this way.

If your Connection is using a FreeStyle Libre 3 system sensor or FreeStyle Libre Select sensor, you will receive glucose data from your Connection if their FreeStyle Libre 3 system sensor or FreeStyle Libre Select sensor is in Bluetooth range of their FreeStyle Libre 3 app.

You can see the last 12 hours of history of your Connection’s glucose data on the main screen of the LibreLinkUp app and view scans and glucose alarm events for the last 2 weeks in the Logbook.

The glucose graph in the LibreLinkUp app will be populated with last 12 hours of glucose readings and the last 2 weeks of scans and glucose alarm events in the Logbook . You should only see the latest notification.

"LO" indicates a glucose reading lower than 2.2 mmol/L (40 mg/dL).

"HI" indicates a glucose reading higher than 22.2 mmol/L (400 mg/dL) for FreeStyle Libre 2 users in United States and Canada and 27.8 mmol/L (500 mg/dL) for all other users.

If either of these readings are seen, the Connection should follow the instructions in the glucose monitoring system user manual.

Red indicates a low glucose reading (<70 mg/dL or 3.9 mmol/L).

Orange indicates a high glucose reading (>250mg/dL or 13.9 mmol/L) for FreeStyle Libre 3 users and (>240mg/dL or 13.3 mmol/L) for all other users.

Green indicates readings in your Connection’s target range.

Yellow indicates readings between your Connection’s target range and the high glucose and low glucose thresholds.

The LibreLinkUp app is compatible with many popular Android and iOS smartphones.

Recommended operating systems:

• Android 8.0, 8.1, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0
• iOS 13.1.3, 13.2, 13.3, 13.3.1, 13.4.1, 13.7, 14.0, 14.4.2, 15.0, 16.0, 17.0, 18.0

Please carefully review the following to understand how Operating System (OS) features may impact your ability to receive glucose reading and glucose alarm notifications (if available):

• For iOS 17 or iOS 18 users, we do not recommend using the Assistive Access mode or Require Passcode or Require Face ID for your LibreLinkUp App at this time.
• For Android 15 users, we do not recommend installing the app in Private space at this time.

The phone must meet the following requirements:

• Wi-Fi or a cellular data plan

The LibreLinkUp app is not compatible with the FreeStyle LibreLink special edition app or FreeStyle Libre 2 special edition app.

Jailbroken devices and beta OS versions are not evaluated or supported.

If you have an Android smartphone, you can download the app from the Google Play store. If you have an iPhone, you can download the app from the App Store.

Both you and your Connection need Internet connectivity for you to receive glucose data and notifications.

The FreeStyle Libre app user must initiate the connection. Have the FreeStyle Libre app user open the FreeStyle Libre app on their smartphone, then:

1. Open the Navigation Menu
2. Tap Connected Apps
3. Under LibreLinkUp, Tap Connect or Manage
4. Tap “Add Connection”
5. Enter your (LibreLinkUp user) first name, last name, and e-mail address
6. Tap “Add” to send the invitation

When the FreeStyle Libre app user sends the invitation, you will receive an email with instructions on how to download the LibreLinkUp app and register for an account.

After you log into the LibreLinkUp app, accept the invitation to connect.

No, a FreeStyle Libre app user does not need the LibreLinkUp app to share glucose data with LibreLinkUp app users. If a FreeStyle Libre app user wants to receive glucose data from other FreeStyle Libre app users, this FreeStyle Libre app user should install the LibreLinkUp app and connect with the other FreeStyle Libre app users.

No, a Connection’s first and last names can be different between the FreeStyle Libre app and the LibreLinkUp app, however their email address must be the same between both apps.

Yes. The FreeStyle Libre app user can see their active Connections in their FreeStyle Libre app via the Connected Apps menu.

Yes. If you downloaded the LibreLinkUp app on your smartphone, you will see a pop-up message asking whether you would like to accept the invitation the next time you open the app. Tap Allow to confirm the connection.

Yes. The FreeStyle Libre app user can stop sharing glucose data at any time. To do this, the FreeStyle Libre app user should open their FreeStyle Libre app, then:

1. Tap the Navigation Menu
2. Tap Connected Apps
3. Under LibreLinkUp, tap Manage
4. Tap the name of the Connection with whom they wish to stop sharing data
5. Tap Stop Sharing

That person will no longer receive glucose data or notifications in the LibreLinkUp app and their name will be removed from the FreeStyle Libre app user’s list of Connections.

To reconnect, the FreeStyle Libre app user must create a new connection from their FreeStyle Libre app and invite you to connect again.

The FreeStyle Libre app user must create a new connection on their FreeStyle Libre app and invite you to connect again.

Yes. If you sign into the same account, you will be able to view Connections’ glucose data in your new installation of the LibreLinkUp app.

Yes. To turn off notifications temporarily:

1. Go to any Connection’s glucose graph screen in the app
2. Tap the gear icon
3. Then toggle OFF the notifications for that Connection
4. Repeat steps 1-3 for other Connections

Check the Notifications Settings screen for each of your Connections to see whether notifications are enabled.

1. Go to the Connection’s glucose graph screen in the app
2. Tap the gear icon
3. Then toggle ON to receive notifications for that Connection
4. Repeat steps 1-3 for other Connections

Note: If your notifications are enabled in the Notification Settings screen and you are still not receiving notifications, go to the notification settings on your smartphone’s operating system and turn on notifications for the LibreLinkUp app.

No. You will not receive sound notifications on the LibreLinkUp app if your smartphone is set to “vibrate only” or “do not disturb”.

If you have opened and signed into the LibreLinkUp app at least once, you will receive glucose data notifications. The LibreLinkUp app does not need to be open or running to receive notifications.

Connections may have the option to use a Sensor with multiple devices. If you Connection starts their Sensor with another device, including their Reader, you will not receive glucose alarms.

You will only receive glucose alarms if you Connection starts a new Sensor with their app.

LibreLinkUp can receive glucose alarms from Connections who are using a FreeStyle Libre 2 system sensor or FreeStyle Libre 3 system sensor and compatible FreeStyle Libre app. To receive these alarms in LibreLinkUp, your Connection must enable these alarms in the FreeStyle Libre app for you to receive them in LibreLinkUp.

For these connections, you can receive low and high glucose alarms in addition to glucose readings and trend arrows. You will not receive:

• Signal Loss alarm

For Connections who are not using a FreeStyle Libre 2 system sensor or FreeStyle Libre 3 system sensor, you will continue to receive glucose readings and trend arrows.

Glucose alarms will appear via notification and in the Connection’s glucose graph and logbook screens in LibreLinkUp.

For Connections using FreeStyle Libre 2 system sensors, each time your Connection receives a glucose alarm notification in their mobile app, you will also receive a glucose alarm notification in LibreLinkUp.

Yes. You can customize the notification settings by Connection rather than one global setting for all Connections.

Your Connection is using a FreeStyle Libre sensor that does not have glucose alarms. The glucose alarms notification setting toggle appears only for Connections whose FreeStyle Libre sensors has glucose alarms.

The glucose alarms notification setting toggle appears only for Connections whose FreeStyle Libre sensors has glucose alarms. If the glucose alarms section does not appear in your notification settings, your Connection is using a FreeStyle Libre sensor that does not have glucose alarms.

Even if you have enabled glucose alarm notifications for your Connection in LibreLinkUp, you will not receive glucose alarm notifications if your Connection is not using a FreeStyle Libre 2 system sensor or does not have glucose alarms enabled on their mobile app.

Note: If your Connection is using a FreeStyle Libre 2 system sensor and has enabled glucose alarms and you are still not receiving notifications, go to the notifications settings on your smartphone’s operating system and turn on notifications for the LibreLinkUp app.

No. You must create a LibreView account or sign into an existing account before using the LibreLinkUp app.

To reset your password:

1. Go to the “Get Started” screen
2. Tap “Sign In”
3. Tap “Forgot Password?”
4. Enter the e-mail address used to create the account
5. Tap “Done”
6. You will receive an e-mail with a link to reset your password
7. Follow the link and enter a new password.
8. Sign in to the LibreLinkUp app using your new password

Yes, you can use your existing LibreView account to log into the LibreLinkUp app. Healthcare professionals cannot use their Professional LibreView accounts to log into the LibreLinkUp app. The LibreLinkUp app is not meant for clinical use or for use by healthcare professionals.

Yes. You can log into your account on the LibreLinkUp app on multiple phones.

1. Tap the Navigation Menu
2. Tap Account
3. Tap the Menu button on the Account screen
4. Tap “Log Out”

Yes. The Connections will be maintained even if you or your Connection change account email addresses.

Yes. You can use the same email address for the LibreLinkUp app as for the FreeStyle Libre app.

No. Your LibreLinkUp app account only allows you to view your Connections’ glucose data in the LibreLinkUp app, not in LibreView.

It depends. The LibreLinkUp app is regionally-based, and you can only connect with the FreeStyle Libre app users with LibreView accounts in the same region as your account. Otherwise, you cannot connect with that FreeStyle Libre app user. Contact Customer Support if you have additional questions.

To reset your password:

1. Go to the “Get Started” screen
2. Tap “Sign In”
3. Tap “Forgot Password?”
4. Enter the e-mail address used to create the account
5. Tap “Done”
6. You will receive an e-mail with a link to reset your password
7. Follow the link and enter a new password.
8. Sign in to LibreLinkUp using your new password