# Q System

> Rock mass classification system automation for underground engineering. (iPhone/iPad app by Stiftelsen Norges Geotekniske Institutt.)

- Source: https://appshunter.io/ios/app/q-system/id1048782407 (this page in markdown: same URL + `.md`)
- Developer: [Stiftelsen Norges Geotekniske Institutt](https://appshunter.io/developer/1217776456)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 8.0 · 20 MB
- Languages: English
- Released: 2016-01-07
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/q-system/id1048782407/reviews.md

## What is Q System?

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.

## Key features

- Rock mass classification automation
- Stability analysis for underground openings
- Faster planning and design
- Efficient engineering processes
- International application

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/q-system/id1048782407/reviews.md

### 3/5 — A good start

*2019-08-19*

Great little app and a good start. Would be useful if it included the chart and ESR

## Frequently asked questions about Q System

### What is the Q System app used for?

The Q System app automates calculations for a rock mass classification system. This system is used to assess the stability of underground openings, aiding in planning and design processes for geotechnical projects.

### Is the Q System app free to use?

Yes, the Q System app is completely free to download and use. It does not require any payment or subscription to access its features.

### What devices does the Q System app support?

The Q System app is available for iPhone and iPod devices. It is designed to run on Apple's mobile operating system.

### How often is the Q System app updated?

The Q System app was last updated on November 18, 2017, with version 1.0.4. Users can expect a stable experience based on its last release.

### Who developed the Q System app?

The Q System app was developed by Stiftelsen Norges Geotekniske Institutt, an organization focused on geotechnical research and engineering.

### What is the age rating for the Q System app?

The Q System app has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain mature content.

### Does the Q System app have ads?

No, the Q System app does not contain advertisements. Users can utilize its functionalities without any interruptions from ads.

## Version history (last 5 releases)

### 1.0.4 — 2017-11-18

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

Support for iOS 11

### 1.0.3 — 2016-02-09

improvements

### 1.0.2 — 2016-01-29

improvements

### 1.0.1 — 2016-01-21

bug fixes

### 1.0 — 2016-01-07

No release notes.

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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.*