iPhone Screenshots


The Q-system is a classification system for rock masses with respect to stability of underground openings. The Q-system was originaly developed at NGI, and is used extensively in Norway as well as internationally. The Q-system app automates all the calculations to make the planning and designing processes faster and more efficient.

What’s New

Version 1.0.4

This app has been updated by Apple to display the Apple Watch app icon.

Support for iOS 11

App Privacy

The developer, NGI - Norges Geotekniske Institutt, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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