Comparison

LibreLinkUp vs FLwatch

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LibreLinkUp

Monitor and support individuals using a FreeStyle Libre sensor and compatible app. View their glucose levels with a quick glance, receive alerts for high or low glucose, and get notified about sensor status. Understand glucose patterns with history and insights.

Highlights
  • Remote glucose monitoring
  • Glucose history and insights
  • Glucose alarms (high/low)
  • Sensor alerts
  • Dark mode for viewing
Currently charting
Read full description

The LibreLinkUp[2] app is a companion app that allows you to monitor[3] and support people who are using FreeStyle Libre systems sensors and compatible an app from the FreeStyle Libre family of apps. You can link up by asking them to invite you in their app. Whether you’re a family member, friend or co-worker, the LibreLinkUp app helps you monitor and support people in your life so they can continue making progress. Turn diabetes care into a more engaged team effort. Why LibreLinkUp? • History and insights: See recent history with the glucose graph or review a logbook of readings and alarms. • In the minute notifications: caregivers can set and receive alarms[3] and notifications in the LibreLinkUp app, as well as receive glucose transfer alarms set by connections. Compatibility may vary between operating systems. Learn more about compatible phones and devices at https://librelinkup.com/support 1. The FreeStyle Libre systems apps are designed to facilitate data sharing between patients and their healthcare providers and caregivers. 2. LibreLinkUp app is only compatible with certain mobile devices and operating systems. Check www.librelinkup.com for more information about device compatibility before using the app. Use of the LibreLinkUp app requires registration with LibreView. 3. The user’s device must have internet connectivity for glucose data to automatically upload to LibreView and to transfer to connected LibreLinkUp app users. Product for prescription only, for Important Safety Information please visit FreeStyleLibre.us The sensor housing, FreeStyle, Libre, and related brand marks are marks of Abbott. Other trademarks are the property of their respective owners. For additional legal notices, terms of use, product labeling, and interactive tutorial, go to: http://www.FreeStyleLibre.com. If you’re experiencing any issues, contact Customer Service directly.

About

FLwatch

Visualize blood glucose readings from compatible sensors on your iPhone and Apple Watch. Track insulin doses, view insulin-on-board and activity graphs, and integrate data with Apple Health for comprehensive diabetes management.

Highlights
  • Blood glucose graph on iPhone and Apple Watch
  • Insulin on Board (IOB) calculation
  • Insulin activity graph
  • iOS Home Screen and Lock Screen widgets
  • Live Activities for quick glucose updates
  • CarPlay support
  • Export to Apple Health
Features
Read full description

FLwatch displays blood glucose readings from Abbott FreeStyle Libre 2, Libre 3 and Libre 3+ sensors, as well as Dexcom G6 / G7 / ONE+ sensors, on your iPhone and Apple Watch. Glucose data can be received through the LibreLinkUp cloud, Dexcom Share, or a direct Bluetooth connection to Libre 3 and Libre 3+ sensors. FLwatch also lets you record insulin doses and visualizes insulin-on-board and insulin activity with dedicated graphs, helping you better understand how insulin and glucose levels interact. Glucose readings and recorded insulin doses can be exported to Apple Health. When using a direct Libre 3 or Libre 3+ Bluetooth connection, they can also be exported to your own Nightscout server. With native Apple Watch support, widgets, Live Activities, and configurable glucose and sensor alerts, your glucose data is always visible across your Apple devices, helping support daily diabetes management. FLwatch is free and open source. FEATURES Glucose Monitoring • Blood glucose graph on iPhone and Apple Watch • Interactive chart on iPhone — tap to inspect individual readings • Optional calibration offset for directly connected Libre 3 and Libre 3+ sensors • Check your current glucose and trend using Shortcuts or Siri • Optional always-on display mode for quick viewing CGM Providers • Direct Bluetooth connection to Libre 3 and Libre 3+ sensors • LibreLinkUp cloud • Dexcom Share Alerts • Configurable low and high-glucose alerts on iPhone, Apple Watch, and CarPlay • Additional critical-low and signal-loss alerts for directly connected Libre 3 and Libre 3+ sensors • Libre 3 and Libre 3+ warm-up status, remaining sensor life, and expiry and replacement notifications • Optional critical delivery and individual Do Not Disturb times Insulin Tracking • Record insulin doses on iPhone, or with Shortcuts and Siri on iPhone and Apple Watch • Basic carbohydrate and insulin calculator using portion size and a configurable insulin-to-carbohydrate ratio • Insulin on Board (IOB) calculation • Supports rapid-acting and fast-rapid-acting bolus insulins • Insulin on board graph • Insulin activity graph Widgets, Live Activities and CarPlay • iOS Home Screen widgets, with and without graphs • Lock Screen widgets • StandBy widgets for bedside view • Live Activities for quick glucose updates • CarPlay view showing current glucose and IOB • Glucose graphs in CarPlay through widgets and Live Activities Apple Watch • Native watchOS app • A wide range of widgets and watch face complications • Glucose graph directly on the watch • On watchOS 11 or later, Live Activities can be mirrored to the Smart Stack Data Sharing • Export glucose readings and recorded insulin doses to Apple Health • When using a direct Libre 3 or Libre 3+ Bluetooth connection, export glucose readings and recorded insulin doses to your own Nightscout server MORE INFORMATION For documentation, feature details, and the open-source code, visit: https://flwatch.app/ DISCLAIMER Not for treatment decisions. The information provided by this app and its extensions must not be used for treatment or insulin dosing decisions. Always rely on your glucose monitoring system and consult a healthcare professional when making medical decisions. TRADEMARK NOTICE All product names, trademarks, and registered trademarks are the property of their respective owners. Their use here is for identification purposes only and does not imply affiliation with or endorsement by the trademark holders. This app is not affiliated with or endorsed by Abbott Diabetes Care Inc. or Dexcom Inc.

Screenshots

LibreLinkUp4 screens
FLwatch4 screens

Verdict

The call

The clearest difference is review sentiment: FLwatch at 87% against LibreLinkUp's 29%. FLwatch also leads on update cadence (weekly vs every 3 months). LibreLinkUp's advantage is in-app purchases (none vs 4) and ratings volume (23K vs 34). On price, ads, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FLwatch sells 4 one-off in-app purchases. LibreLinkUp asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LibreLinkUp holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: LibreLinkUp has 23K ratings behind it against 34, so its average is the more settled of the two. Written reviews complicate that: 29% of LibreLinkUp's written reviews are positive against 87% of FLwatch's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

LibreLinkUp ships an update every 3 months, FLwatch weekly. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard7 real differences · 4 level
LibreLinkUp versus FLwatch: the parameters behind the verdict, then further details
ParameterLibreLinkUpFLwatch
PriceFreeFree
Rating4.8 (23K ratings) — better4.6 (34 ratings)
Positive reviews28.6% of reviews87.2% of reviews — better
Number of ratings23K — better34
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
Best chart rank#130 — better—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.0 — better18.0
Further details — not scored
Size89 MB21 MB
Age rating17+17+
DeveloperNewyu, IncPhilipp Poeml

Customer experience

LibreLinkUp

All ratings22,694 ratings
Positive95.1%
Neutral2.2%
Negative2.7%
Written reviews824 reviews
Positive28.6%
Neutral18.0%
Negative53.4%

FLwatch

All ratings34 ratings
Positive88.2%
Neutral8.8%
Negative2.9%
Written reviews39 reviews
Positive87.2%
Neutral7.7%
Negative5.1%

Bugs and requests

LibreLinkUp

Reported bugs

4 issues
  • Sudden loss of connectivity
  • Inconsistent data sync between devices
  • Alarms not triggering as expected
  • Inability to log in or create account

Requested features

5 requests
  • Add graph and trend visualization
  • Allow customizable alarms and notifications
  • Integrate insulin dosage and food intake logging
  • Provide historical data access beyond 12 hours
  • Enable Apple Watch integration

FLwatch

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

LibreLinkUp

No in-app purchases

4 purchases

FLwatch

One-time4
  • Some good coffee beans$4.99
  • Some more good coffee beans$9.99
  • Many good quality coffee beans$24.99
Show 1 more
  • Lots good quality coffee beans$49.99

Questions

Is LibreLinkUp free?
LibreLinkUp is free to download, with no in-app purchases.
Is FLwatch free?
FLwatch is free to download, with in-app purchases available.
Which has better reviews, LibreLinkUp or FLwatch?
LibreLinkUp is rated higher. LibreLinkUp averages 4.8 out of 5 from 23K ratings, while FLwatch averages 4.6 from 34 ratings.
Do LibreLinkUp or FLwatch have ads?
Neither LibreLinkUp nor FLwatch shows ads.
Which is updated more often, LibreLinkUp or FLwatch?
LibreLinkUp ships an update every 3 months, and FLwatch weekly. Most recently, LibreLinkUp was updated on September 24, 2026 and FLwatch on September 22, 2026.

Other comparisons