Comparison

nightguard vs LibreLinkUp

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

Head to head
About

nightguard

Monitor blood glucose levels from your Nightscout backend. Receive alerts for out-of-range values, track historical data with overlay charts, and tune basal rates with statistics. Optionally sync data to Apple HealthKit.

Highlights
  • Blood glucose value display
  • Customizable glucose range alerts
  • Alert snoozing and reactivation
  • Rapid rise/fall alerts
  • Historical overlay charts
  • Basal rate tuning statistics
  • HealthKit data sync
Features
Read full description

Disclaimer! Don't use this App for medical decisions. It comes with absolutely no warranty. Use it at your own risk! You can use nightguard to submit your bg values to the Apple HealthKit. This is disabled by default but can be enabled in the nightguard app. Nightguard is an app that displays your blood glucose values from the Nightscout backend. It is a native iOS App with support for the Apple Watch. Features are: - Define a range of acceptable blood glucose values. - Whenever your values are out of range you will be alerted. - You can snooze the alerts all the time and for a defined time period. - You can reactivate the alerts all the time. - You can activate alerts if the values are rising or falling too fast. - The app displays yesterdays values as an overlay chart. This way you have a hint about how your values could behave in the future. - Tune your basal rates with the statistics function to overlay different days - Sync your bg values to HealthKit (optional) For the alarms to work the app has to be active. So you can enable a screen lock that keeps the app running all night long. Have a look at www.nightscout.info for more information about how to setup your own Nightscout backend.

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.

Screenshots

nightguard4 screens
LibreLinkUp4 screens

Verdict

The call

The clearest difference is review sentiment: nightguard at 70% against LibreLinkUp's 29%. nightguard also leads on device support (4 vs 1). LibreLinkUp's advantage is in-app purchases (none vs 2) and rating (4.8 vs 4.4). On price, update cadence, ads and iOS requirement 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. nightguard sells 2 in-app purchases, starting at $1.99 per month. LibreLinkUp asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LibreLinkUp holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: LibreLinkUp has 23K ratings behind it against 833, so its average is the more settled of the two. Written reviews complicate that: 70% of nightguard's written reviews are positive against 29% of LibreLinkUp's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

nightguard ships an update every 2 months, LibreLinkUp every 3 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 4 level
nightguard versus LibreLinkUp: the parameters behind the verdict, then further details
ParameternightguardLibreLinkUp
PriceFreeFree
Rating4.4 (833 ratings)4.8 (23K ratings) — better
Positive reviews70.3% of reviews — better28.6% of reviews
Number of ratings83323K — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#119 — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size11 MB89 MB
Age rating17+17+
DeveloperSPORTMEONewyu, Inc

Customer experience

nightguard

All ratings833 ratings
Positive85.5%
Neutral4.3%
Negative10.2%
Written reviews219 reviews
Positive70.3%
Neutral13.2%
Negative16.4%

LibreLinkUp

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

User reviews

nightguard

From 833 App Store ratings

What we love

  • 🚀 Great app for monitoring glucose levels
  • 👍 Helpful for managing diabetes
  • 🤖 Integrates well with Apple Watch
  • 📊 Provides useful data visualization

Room to improve

  • 🐛 Alarms/notifications not working properly
  • 🔄 Inconsistent data sync/refresh issues
  • 📱 Apple Watch app crashing/not functioning
  • 🔢 Issues with unit conversions (mg/dL vs mmol/L)

LibreLinkUp

From 23K App Store ratings

What we love

  • 👍 Ease of use
  • 🚀 Convenient remote monitoring
  • 💡 Helpful for managing diabetes
  • 🚀 Instant data updates
  • 👍 Provides peace of mind

Room to improve

  • 🐛 Connectivity issues
  • 🐛 Unreliable notifications
  • 🐛 Inconsistent data accuracy
  • 🐛 Frequent app crashes
  • 🐛 Confusing setup process

Bugs and requests

nightguard

Reported bugs

4 issues
  • Readings stuck or not updating
  • Nightscout URL not recognized
  • Glucose data not syncing to Apple Health
  • Sudden disappearance of Apple Watch app

Requested features

4 requests
  • Add ability to view/scan graph data points
  • Improve Apple Watch complication and widget
  • Allow custom high/low alert thresholds
  • Provide more detailed user manual/documentation

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

In-app purchases

2 purchases

nightguard

Subscriptions2
  • Nightguard Pro$1.991 Month
  • Nightguard Max Subscription$3.991 Month
None

LibreLinkUp

No in-app purchases

Questions

Is nightguard free?
nightguard is free to download, with in-app purchases available.
Is LibreLinkUp free?
LibreLinkUp is free to download, with no in-app purchases.
Which has better reviews, nightguard or LibreLinkUp?
LibreLinkUp is rated higher. nightguard averages 4.4 out of 5 from 833 ratings, while LibreLinkUp averages 4.8 from 23K ratings.
Do nightguard or LibreLinkUp have ads?
Neither nightguard nor LibreLinkUp shows ads.
Which is updated more often, nightguard or LibreLinkUp?
nightguard ships an update every 2 months, and LibreLinkUp every 3 months. Most recently, nightguard was updated on September 22, 2026 and LibreLinkUp on September 24, 2026.

Other comparisons