# GammaGuard

> Radiation monitoring and data visualization tool for CT007 series detectors. (iPhone/iPad app by Environmental Instruments Canada.)

- Source: https://appshunter.io/ios/app/gammaguard/id1223543931 (this page in markdown: same URL + `.md`)
- Developer: [Environmental Instruments Canada](https://appshunter.io/developer/1223543930)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.2 · 27 MB
- Languages: English
- Released: 2017-05-16
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/gammaguard/id1223543931/reviews.md

## What is GammaGuard?

• Provides an easy to navigate User Interface that allows the user to get all the information they need quickly.
• GammaGuard has 4 views each with with unique purposes.
• Simple view includes information on the detector, a visual gauge and current dose rate.
• Details view includes extra details to give the user more insightful information such as: Counts received in the past second, Current Count/Dose Rate, Total Count/Dose, Total Time, and Overall Count/Dose Rate.
• Interpret view includes Current Count/Dose rate, Total Count/Dose, as well as a warning message depending on the current mode
• Graph view includes a graph that plots the Count/Dose Rate values over time. The user can select values to see the GPS coordinates where that reading was taken, the time at which it was taken, and the Count/Dose Rate. While a value is selected the user can open the gps coordinates in the native maps app to view where the reading was from.
• The graph view has 3 graphs: Latest, Overall History, and Selected Interval. 
	• Latest will plot the last 1200 points, 
	• Overall History will split all the readings into 50 intervals and plot the minimum and maximum points within that interval.
	• Selected Interval allows you to view up to 1200 points centered around a point from the history graph. 
• Gamma Mode will show Dose and allow the user to use the Interpret view to receive a message, warning the user how long they can receive the current dose rate before they reach the Routine Dose Limit and the Emergency Dose Limit. It also shows the user the percentage of each limit that they have reached.
• Contamination Mode will show Counts and allow the user to use the Interpret view to receive a message, warning the user whether the area exceeds the Hot Zone Level(Only available on contamination capable detectors).
• Takes advantage of one consistent User Interface across all CT007 series detectors, so that there is only one system to learn.
• Many customizable settings allowing the user to tailor the experience to exactly what they want including: Units, Warning Alarm and Beeping(both for iOS device and detector), Data logging, and many more options.
• Alerts the user to elevated radiation levels.
• Changes navigation bar from green, to yellow, to red, to indicate low, elevated, and high levels of radiation.
• Displays the radiation level when the CT007 detector is up to 40 m away from the smartphone.

For a more detailed description of the application, please visit the developer website listed below:
http://gammawatch.com/

Some Icons downloaded from Icons8 so Thanks to Icons8 for the Icons : 
https://icons8.com/

## Key features

- Real-time radiation level monitoring
- Detailed data views (Simple, Details, Interpret, Graph)
- Historical data plotting (Latest, Overall, Selected Interval)
- Customizable settings (Units, Alarms, Data Logging)
- Radiation level alerts
- Visual indicators for radiation levels
- GPS coordinate mapping of readings

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/gammaguard/id1223543931/reviews.md

### 1/5 — Does not work

*2023-06-16*

Due to patent infringement possibilities, this app removed the smart phone camera feature, and now is useless for this purpose.

### 5/5 — Great app

*2017-05-12, version 1.0*

The best

## Frequently asked questions about GammaGuard

### What is GammaGuard?

GammaGuard is a utility application designed to work with CT007 series radiation detectors. It provides a user interface for monitoring, interpreting, and visualizing radiation data in real-time.

### What devices does GammaGuard support?

GammaGuard is available for iPhone, iPad, and iPod touch devices.

### How does GammaGuard alert users to radiation levels?

GammaGuard alerts users to elevated radiation levels and changes the navigation bar color from green to yellow to red, indicating low, elevated, and high levels respectively.

### Can GammaGuard be used offline?

The description does not specify offline functionality. However, it mentions data logging and the ability to view GPS coordinates, suggesting some data may be stored locally.

### What are the different views in GammaGuard?

GammaGuard offers four main views: Simple for a quick overview, Details for in-depth information, Interpret for warnings and limits, and Graph for plotting radiation levels over time.

### How accurate is GammaGuard?

The app's accuracy is dependent on the connected CT007 detector. The app itself provides data visualization and interpretation based on the readings received from the detector.

### How often is GammaGuard updated?

The latest version is 1.13.6, and it was last updated on January 27, 2021. Users can check the app store for future updates.

### What is the age rating for GammaGuard?

GammaGuard has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 1.13.6 — 2021-01-27

- Fixed issue where response time maximum was 1 less than it should be

### 1.13.5 — 2020-10-01

- fix for overwriting conversion factor with bad value

### 1.13.4 — 2020-06-24

- Fixed colors so views are visible on both darkmode and lightmode

### 1.13.3 — 2020-06-20

Added extra safety to connection process

### 1.13.2 — 2019-04-13

- Fixed some settings not saving
- Fixed cluster map not calculating values properly while connected
- Added alert to tell when location services are turned off

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## More apps by Environmental Instruments Canada

- [Radon Sniffer](https://appshunter.io/ios/app/radon-sniffer/id1271539715)
- [GammaGuard 2.0](https://appshunter.io/ios/app/gammaguard-20/id1567442887)

All apps by Environmental Instruments Canada: https://appshunter.io/developer/1223543930

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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.*