# Guardian Monitor

> Displays glucose data from CGM services with custom alarms and voice readouts. (iPhone/iPad app by Kacper Rychlinski.)

- Source: https://appshunter.io/ios/app/guardian-monitor/id1546989938 (this page in markdown: same URL + `.md`)
- Developer: [Kacper Rychlinski](https://appshunter.io/developer/1546989940)
- Category: Medical, Health & Fitness
- Price: Free with in-app purchases
- Rating: 4.00/5 from 52 App Store ratings · 77 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 36 MB
- Languages: Russian, American English, Hungarian, Dutch, European Spanish, Italian, German (Germany), Polish, European Portuguese, Chinese (Traditional, Taiwan) and 5 more
- Released: 2022-03-26
- Data updated: 2026-09-08
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/guardian-monitor/id1546989938/reviews.md

## What is Guardian Monitor?

Note: This app is for informational purposes only and should not be used to make medical decisions.

Guardian Monitor displays glucose data from supported CGM services without modifying any settings in the original app.

To use the app, you need an account with the original CGM service, as authorization is required for it to function.

Guardian Monitor enhances standard functionality with additional features such as a custom alarm system and voice readouts of glucose levels.
It can also run in the background by playing a standby sound that turns into an alarm when necessary.

Other features include:
    •    Apple Health synchronization (glucose, insulin, carbohydrates)
    •    support for Apple Watch (including eSIM models)
    •    Live Activity (also for CarPlay and Apple Watch)
    •    widgets
    •    Siri integration
    •    Nightscout synchronization
    •    session sharing between devices

Facebook Group: https://www.facebook.com/groups/GuardianMonitor

Special thanks:
Paulina Borowska – German translation
Jaap Kramer – Dutch translation
Gála József – Hungarian translation

## Key features

- Displays glucose data from CGM services
- Custom alarm system
- Voice readouts of glucose levels
- Apple Health synchronization
- Apple Watch support
- Live Activity
- Widgets

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Full Access | $2.99 | per month |
| Full Access | $7.99 | per 3 months |


## Recent user reviews (10 of 77)

All indexed reviews: https://appshunter.io/ios/app/guardian-monitor/id1546989938/reviews.md

### 2/5 — An sich gut, aber mit Fehlern.

*2026-08-22*

Guardian 4 mit Pumpe, Apple Health Connection funktioniert. Guardian 4 ohne Pumpe, ist nach einer Weile einsehbar, aber Richtung Apple Health fließen keine Daten. Mein einziger Grund für diese App und das Abo, funktioniert leider nicht...
(Live-Aktivitäten funktioniert auch nicht bei mir…)

### 5/5 — 関連するアプリの中で最も優れています。

*2026-06-13*

データ更新が遅かったり、頻繁にログアウトしたり、そういうのはほとんどメドトロニックのサーバー側の問題です。まるで嫌がらせのようなメドトロニックの仕様変更にも対応が早く、使い勝手の悪い公式のアプリよりもかなり良いです。
おかげで血糖値管理がしやすくなっています。本当にありがとう。

### 4/5 — 가디언센서 교체시

*2026-05-14*

가디언 센서 교체시 새 센서 수치나오기까지 남은 시간이 나왔었는데 앱이 업데이트 되면서 사라졌어요 ㅜㅜ 다시 나올수 있게 해주세요

### 1/5 — Will not stay logged in

*2026-04-23*

For a month I have been unable to keep it updating. This app is very irritating. I have followed many suggestions but to no avail. I want to cancel this garbage and get it off of my phone. I hope this is not setup for endless subscription as I can’t find that info with a renewal date coming soon.

### 3/5 — 10minutes

*2026-04-21*

◽️更新が10minutesになります。5minutesが正しいのに、5minutesで更新しません。さらにNOWが出て来なくなりました。


The update time is set to 10 minutes. It should be 5 minutes, but it doesn't update in 5 minutes. Furthermore, the "NOW" button no longer appears.

◽️頻繁にログアウトする。放置でモニタリングが出来ない。勝手にログアウトしてしまったらアラートも意味がなく有料の意味が無い。

I log out frequently. I can't monitor it if I leave it unattended. If I log out automatically, alerts are useless and the paid service is pointless.

◽️上記の不具合がなければ優秀なアプリです！

If it weren't for the above issues, it would be an excellent app!

医療用なので、今直ぐにでも改善して欲しいです。子供の血糖値をモニタリングするために使っています。

Since this is a medical device, I would like it to be improved immediately. I use it to monitor my child's blood sugar levels.

### 5/5 — Great app — request for daily (calendar-based) average

*2026-03-26*

I really appreciate this app — it has been extremely helpful for managing daily glucose data. Thank you for continuously improving it.

I would like to request one additional feature regarding the average glucose display. Currently, the average is calculated over the past 24 hours from the current time. While this is useful, it would be even more convenient if there were an option to calculate and display the average based on a fixed daily period (e.g., from 00:00 to 23:59).

Although it is possible to manually adjust the time range, doing this every time is a bit cumbersome. Having a simple toggle or preset for “daily average (calendar day)” would make it much easier to review trends and compare days.

Thank you for considering this feature, and again, thank you for your great work.

### 5/5 — Life saver

*2026-02-19*

I’m not very good at tracking my glucose. So discovering this app has changed my life. My glucose now displays on my Apple CarPlay, Sugar Pixel, Apple Watch, Garmin Edge, and lock screen. The developer is agile and responds immediately to any new issues.

### 2/5 — Don't work

*2026-01-25*

Good afternoon. The app has stopped updating data.

### 3/5 — Sign in issue

*2026-01-07*

We tried to sign in on 2 phones and it kicked the one out, understandably. But after deleting the app off the other phone, the one phone is still getting kicked out saying it’s logged in in two places. Any advice on how to stop that?

### 1/5 — Не работает

*2026-01-06*

Не работает

## Frequently asked questions about Guardian Monitor

### What does Guardian Monitor do?

Guardian Monitor displays glucose data from supported CGM services. It does not modify settings in the original app. The app provides enhanced functionality such as a custom alarm system, voice readouts of glucose levels, and background operation with standby sounds that can turn into alarms.

### What are the key features of Guardian Monitor?

Key features include displaying glucose data from CGM services, a custom alarm system, voice readouts of glucose levels, Apple Health synchronization (glucose, insulin, carbohydrates), Apple Watch support, Live Activity, widgets, Siri integration, and Nightscout synchronization.

### How does Guardian Monitor make money?

The application is free to download and use, but it offers in-app purchases for additional features or content. There are no advertisements within the app.

### What devices is Guardian Monitor compatible with?

The app is designed for Apple devices and supports Apple Watch, including eSIM models. It also offers features like Live Activity, which can be used with CarPlay and Apple Watch, and integrates with Siri.

### Who is Guardian Monitor intended for?

This app is for informational purposes only and should not be used for medical decisions. It is designed for users who have an account with a CGM service and want to view their glucose data with added features like custom alarms and voice readouts on their Apple devices.

## Version history (last 5 releases)

### 1.7.0 — 2026-08-25

- Support for MiniMed Flex and the Instinct sensor: active insulin and infusion set status
- Live Activity: alarm, voice reading and snooze right from the Lock Screen
- Polished interface details, bug fixes and battery usage optimization

### 1.6.6 — 2026-05-21

iPhone and iPad:
- latest glucose reading shown in a tile with a background color that highlights out-of-range values
- full-screen mode with the clock in the title bar

### 1.6.5 — 2026-05-13

- Option to show the glucose statistics chart on the home screen
- Fixed a rare chart refresh issue

### 1.6.4 — 2026-05-07

Fixed insulin marker display on the chart for the last 24 h in sensor-only setup (no pump); markers without a value (boluses, meals) are not saved to history.

### 1.6.3 — 2026-05-06

- New chart options menu with day navigation
- iPad: new sidebar layout
- Improvements to Statistics
- More stable widget refresh on Apple Watch
- Apple Health sync bug fixes

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| [CareLink™ Connect US](https://appshunter.io/ios/app/carelink-connect-us/id1535972481) | — | Free | Medical |

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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 2026-09-08.*