# FaultKin Mobile vs GST[AR]

The clearest difference is update cadence: FaultKin Mobile at every 2 months against GST[AR]'s every 4 months. FaultKin Mobile also leads on iOS requirement (11.0 vs 16.4). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for FaultKin Mobile against 5.0 for GST[AR]. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

FaultKin Mobile ships an update every 2 months, GST[AR] every 4 months. The most recent releases landed on September 17, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | FaultKin Mobile | GST[AR] |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/faultkin-mobile/id1234264776/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/gstar/id1519232314/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 28 MB | 2 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Allmendinger](https://appshunter.io/developer/1194772609) | [GiGa infosystems GmbH](https://appshunter.io/developer/1519232496) |

## What reviewers say

### FaultKin Mobile

[App page](https://appshunter.io/ios/app/faultkin-mobile/id1234264776)

This app allows geologists to collect, visualize, and analyze fault slip data directly from their mobile device. It offers both automatic data entry using device orientation and manual input options, with features for grouping data and performing basic calculations.

**Highlights:** Automatic data entry via device orientation, Manual data entry via stereonet or text fields, Group faults with custom tags, Perform basic calculations (rotations, unfolding), Plot P and T axes, moment tensor axes, View plots from any orientation, Stamp entries with time, date, and location

**Features:** macOS Compatibility

**In-app purchases:** none


### GST[AR]

[App page](https://appshunter.io/ios/app/gstar/id1519232314)

Explore and visualize geological models in augmented reality. Browse a selection of models, place them on any surface, and interact with them by rotating, scaling, and highlighting features. Share your AR sessions with others for collaborative exploration.

**Highlights:** Browse geological models, View models in AR, Rotate and scale models, Highlight model features, Share AR sessions, Customize AR settings, Add custom model sources

**In-app purchases:** none


## Frequently asked questions

### Is FaultKin Mobile free?

FaultKin Mobile is free to download, with no in-app purchases.

### Is GST[AR] free?

GST[AR] is free to download, with no in-app purchases.

### Which has better reviews, FaultKin Mobile or GST[AR]?

FaultKin Mobile and GST[AR] are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do FaultKin Mobile or GST[AR] have ads?

Neither FaultKin Mobile nor GST[AR] shows ads.

### Which is updated more often, FaultKin Mobile or GST[AR]?

FaultKin Mobile ships an update every 2 months, and GST[AR] every 4 months. Most recently, FaultKin Mobile was updated on September 17, 2026 and GST[AR] on July 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*