# Guardian Connect US

> Continuous glucose monitoring data display and sharing app. (iPhone/iPad app by Medtronic, Inc..)

- Source: https://appshunter.io/ios/app/guardian-connect-us/id1231469430 (this page in markdown: same URL + `.md`)
- Developer: [Medtronic, Inc.](https://appshunter.io/developer/445860677)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 2.00/5 from 8 App Store ratings · 65 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 47 MB
- Languages: American English
- Released: 2018-07-23
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/guardian-connect-us/id1231469430/reviews.md

## What is Guardian Connect US?

Introducing the Guardian™ Connect continuous glucose monitoring (CGM) system. The Guardian™ Connect system uses a tiny sensor to measure your interstitial glucose level, which is the glucose found in the fluid between the cells just below your skin, every 5 minutes. It takes readings all day and night and sends them to your phone via a small wireless transmitter, so you can see how you're doing anytime.

The Guardian™ Connect mobile app functions as the primary display of glucose data, showcasing up to 288 readings per day. You can see your most recent sensor glucose data and glucose trends over time. You can also receive alerts to notify you when you're going above or below your preferred range and keep track of daily events which may impact your glucose levels.
Your mobile app also sends your data to CareLink™ Personal diabetes management software, so you can see your full information online and share your information with family or friends. Those closest to you can even receive text messages whenever you go out of range.

To use the Guardian™ Connect system, you will need the Guardian™ Connect transmitter and Guardian™ Sensor 3, as well as this app. To learn more or purchase the Guardian™ Connect system, visit medtronicdiabetes.com.

IMPORTANT NOTE: This app will only work with Guardian™ Connect transmitter, which was specifically designed to communicate with your device via Bluetooth. This transmitter has the letters "GC" on the front. It will not connect to other Medtronic CGM transmitters, including the MiniLink™ and Guardian™ Link 3 transmitters.

The Guardian™ Connect system requires a prescription and is indicated for continuous or periodic monitoring of glucose levels in the interstitial fluid under the skin, in patients (14 to 75 years of age) with diabetes mellitus. The system is intended to complement, not replace, information obtained from standard blood glucose monitoring devices. See bit.ly/GCRisks 

This app store should not be used as your first point of contact to resolve technical or customer services issues. In order to protect your privacy and personal information, and promptly resolve any technical or customer services issues you are having with any Medtronic product, please contact your local Medtronic support line.

This app is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment.

©2024 Medtronic. All rights reserved. Medtronic, Medtronic logo, and Engineering the extraordinary are trademarks of Medtronic. ™*Third-party brands are trademarks of their respective owners. All other brands are trademarks of a Medtronic company.

Apple, App Store, and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries and regions.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Medtronic is under license. Other trademarks and trade names are those of their respective owners.

## Key features

- Continuous glucose monitoring data display
- Real-time glucose readings and trends
- Out-of-range glucose alerts
- Daily event tracking
- Data sharing with family and friends
- Text message alerts for out-of-range events

## Recent user reviews (10 of 65)

All indexed reviews: https://appshunter.io/ios/app/guardian-connect-us/id1231469430/reviews.md

### 1/5 — How can something so important fail so hard?

*2025-02-17*

I don’t understand it.

**Developer response:** We're sorry you're having trouble. Our 24-Hour Technical Support team would like to help. Please give them a call at your convenience at 800.646.4633, option 1.

### 5/5 — Question

*2025-01-23*

Can I check my GMI on my guardian 3

**Developer response:** Hello! Please give our Technical Support team a call for more information at 1-800-646-4633, option #1. Thank you.

### 1/5 — Horrible annoying app

*2024-11-21*

First, the alert sounds can be helpful and obtrusive. It will interrupt music videos and everything else when it makes a noise. Sometimes making them stop all the together. When you get an alert and you go to the app to check what the alert might be, it sounds the alert again right in your face. Also, every time I insert a new sensor. I have to delete the app and reinstall the app and go through all the set up. Every time I put on a new sensor. New updates are rarely available. Every time only seemingly to make the app worse and worse.

**Developer response:** We're sorry you're having trouble. Our 24-Hour Technical Support team would like to help. Please give them a call at your convenience at 800.646.4633, option 1.

### 1/5 — A Worsening

*2024-03-30*

This new version cannot be considered an improvement. 

1.  It does not work if your CARELINK application is placed in a country outside the US. Therefore you cannot recover your stored data of previous months. 

2. Most of devices used to measure blood glucose are graduated in milligrams per deciliter (mg/dl), but this new worsening is set to the weird seldom used graduation of millimoles per liter (mmol/l). Therefore calibration requires continuous transformation of units, something never before required. 

What are these Medtronic “programmers or engineers” thinking of? 

What a bluff

**Developer response:** Hi, Luis. We are finishing up testing and regulatory approval for iOS 16 compatibility and will be sharing updates as soon as they are available. We appreciate your patience. For questions related to turning off alerts, please reach out to our technical support team at 800.646.4633, option 1.

### 1/5 — ISO 17??

*2023-11-20, version 4.1.1*

Just bought the new iPhone 15 pro max now I can’t use the app. Now I have all this wasted money in supplies and transmitter. WHEN DO WE GET AN UPDATE??!! Hello?!

### 1/5 — Doesn’t work. Shame on Medtronic

*2023-10-24, version 4.1.1*

Medtronic with all the money they make still can’t figure a way to develop an app that actually works 
My doctor actually recommend I get a different glucose monitoring system because and I quote “Medtronic got too big and lazy to keep their crap up to date “
I went against a my doctor because I like the pump 
I promise you this will be the last time I ever buy Medtronic devices

### 1/5 — Will not connect

*2023-08-09, version 4.1.1*

I’ve had to delete and reinstall the app multiple times because the sensor disconnects to Bluetooth, sometimes taking a week until I can reconnect it to Bluetooth, making it worthless.
Once it is connected the amount of times it needs to be recalibrated makes the sensor actually work a small amount of time.
It’s honestly so sad because when it does work the sensor makes life a lot easier.

### 1/5 — Won’t pair

*2023-05-24, version 4.1.1*

The transmitter won’t pair no matter what I do. I have tried everything and still cannot get it to pair. There is no way to manually pair and there are NO troubleshooting instructions online. So essentially I am without a CGM that I paid for. What a rip off!

### 1/5 — Help

*2023-03-04, version 4.1.1*

I have an iPhone 10 and it keeps on telling me that it is incompatible due to software and also the app doesn’t open on my phone. I need this app in order to follow up and monitor my health What can be done about this??????!!!

### 2/5 — Surprised this is a medical grade app

*2023-01-31*

The sensor is constantly losing the Bluetooth connection with the phone. It takes up to 5 minutes to reconnect. This system requires numerous calibrations when you first put on a new sensor and will wake you up from 10PM to 7AM to recalibrate. 
The readings can also be more than 20% off from finger pricks and even when you recalibrate the readings they don’t reflect the new calibration. 
Then there is the extreme delay in updating the app to new IOS releases. My company made us all upgrade to a new IOS update and the app was not compatible so I couldn’t use it for nearly 2 months. It would be better to put a 1 time acceptance to use the app without the testing.

## Frequently asked questions about Guardian Connect US

### What does the Guardian Connect US app do?

The Guardian Connect US app serves as the primary display for data from the Guardian Connect continuous glucose monitoring (CGM) system. It shows up to 288 glucose readings per day, displays current sensor glucose data and trends over time, and sends alerts for out-of-range glucose levels. It also allows you to track daily events that might affect your glucose and share your data with others.

### What are the key features of the Guardian Connect US app?

Key features include real-time display of sensor glucose data, visualization of glucose trends, customizable alerts for high and low glucose levels, tracking of daily events impacting glucose, and the ability to share data with designated contacts who can receive text message alerts when you go out of range.

### How much does the Guardian Connect US app cost?

The app itself is free to download and use. However, to utilize the Guardian Connect system, which includes the app, a prescription is required for the Guardian Connect transmitter and Guardian Sensor 3. The cost of the system components is not detailed in the app description.

### What devices is the Guardian Connect US app compatible with?

This app is specifically designed to work with the Guardian Connect transmitter, which communicates via Bluetooth and has 'GC' on the front. It will not connect to other Medtronic CGM transmitters. The app requires this specific transmitter and sensor to function. Compatibility with specific phone operating systems is not detailed but it is implied to work with smartphones that support Bluetooth.

### Who is the Guardian Connect US app intended for?

The Guardian Connect US system, including the app, is intended for patients aged 14 to 75 with diabetes mellitus. It is designed for continuous or periodic monitoring of glucose levels in the interstitial fluid under the skin and is meant to complement, not replace, standard blood glucose monitoring devices.

## Version history (last 5 releases)

### 4.3.0 — 2024-03-21

Thank you for using Guardian™ Connect! We have made the following updates:
• Additional bug fixes and improvements

### 4.1.1 — 2021-09-21

Thank you for using Guardian Connect! We have made the following updates:
• Additional bug fixes and improvements

### 4.1.0 — 2020-07-28

This app update introduces:
• New Alert Volume Settings
• Mute All Alerts
• Max Volume at Night
• New Setup Wizard
• Additional bug fixes and improvements

### 3.2.4 — 2019-05-07

Thank you for using Guardian Connect! We have made the following updates:
• Additional bug fixes and improvements

### 3.2.3 — 2018-09-17

Thank you for using Guardian Connect! We have made the following updates:
• Support for iPhone X layout
• Additional bug fixes and improvements

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All apps by Medtronic, Inc.: https://appshunter.io/developer/445860677

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*