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Download GammaGuard

Download GammaGuard 4.3.1    Last updated: April 6, 2017

Note: When using Android 6+, some browsers and file managers have problems launching APK files. For instance, the Chrome Downloads window, and Astro File Manager. If you encounter issues launching the APK, try a different file manager, such as 'My Files' on Samsung devices, or 'File Manager' by ASUS (available in the Play Store).

Installation Instructions
  • In your devices settings, find and enable the option to install apps from unknown sources. This will likely be under the category of Security or Applications.
  • Click the link above to download GammaGuard to your device.
  • You may be prompted with a security warning. If so, click OK to download the file.
  • If you have previously installed GammaGuard and are downloading this as an update, you may be prompted that the file already exists. If so, click replace file.
  • When the file has finished downloading, click the download complete notification. Alternatively, using a 'downloads' or 'file explorer' app, find and click on the APK file.
  • An automatic installer/updater will be launched.
  • Clicking install will then complete the install/update process.


  • Environmental Instruments Canada, Inc