Comparison

FaultKin Mobile vs GST[AR]

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FaultKin Mobile

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
Read full description

FaultKin Mobile is designed to help you collect, visualize, and analyze fault slip data on the go. It is a companion to my FaultKin program for desktop computers, but it can also be used to measure faults on the outcrop. The app has the following features: - Provide automatic data entry as a geologist's compass by reading the iOS device orientation and converting it to strike and dip of planes and/or trend and plunge of lines. - Provide manual data entry via either tapping and dragging on the stereonet or by typing values into text fields. - Groups of faults can be assigned different tags. You will probably want to do this based on location or other criteria. For example, you may want to have a tag labeled "Corral Quemado-Older" and anther "Corral Quemado-Younger". - Carry out basic calculations such as: rotations about any axis, unfolding faults around local bedding, or measure angles between lines and between planes. - Plot P and T axes, (unweighted) moment tensor axes, P-T dihedra, fault plane solutions, and contour P and T axes. - View the plots from any orientation, not just looking straight down into the lower hemisphere - Stamp each entry with time date and, if enabled by the user, location. See the location of a datum in the iOS Maps program - Provide basic input and output of data using standard iOS conventions - Work on both iPhones or iPads, both in portrait mode only. The desktop version of FaultKin will soon be updated so that it can read and write FaultKin Mobile files, which are simple tab separated text files. Use it at your own risk. In particular, recall that your iOS device is very sensitive to magnetic fields and the compass bearings can easily be off by 10-20°! This program should not be used as a sole source of navigation data. The author assumes no responsibility for incorrect results, unanticipated behaviors, loss resulting from results provided by the program, or any other anticipated or unanticipated event related to the program.

About

GST[AR]

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
Read full description

GST[AR] allows you to browse, download, view, and share geological models in augmented reality. Browse Browse through available models and their features to find a nice selection to present in AR. Models are retrieved from running instances of GST Web. Don’t worry, there are default sources added already, so you can get started right away. Hint: If you see a „Visit“ button near a section of models, you can tap it to learn more about the institution that provides these models for you! When you select a model, you will find a list of features waiting for you. Make your selection and off you go to the AR view. View As soon as the features are downloaded, you will be able to place them on any horizontal surface in AR. Use gestures or sliders to rotate and scale your model. Tap on individual parts to learn about their name or use the legend to even highlight individual features. Superelevation is available via sliders as well! Share When you have placed a feature selection in AR, you get the option to share your session with others! Use the share button to let other peers join your session, synchronize your worlds and you will be looking at the same model in no time. Changes to the model rotation, scale and location will be synced automatically between all peers in the session. Hold down on a model to place your marker to point towards the feature of interest or highlight a certain feature via the legend for all other peers. Settings and customization Customize your experience by changing a couple of settings. In the settings menu, you will have the possibility to change aspects of scaling, how high the models float above the surface or even enable such cool features like "people occlusion" that make your AR scene even more immersive! Furthermore, if you want to access models from a GST Web instance that is not present in the app, you have the possibility to add endpoints of your own.

Screenshots

FaultKin Mobile4 screens
GST[AR]4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
FaultKin Mobile versus GST[AR]: the parameters behind the verdict, then further details
ParameterFaultKin MobileGST[AR]
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better16.4
Further details — not scored
Size28 MB2 MB
Age rating4+4+
DeveloperRichard AllmendingerGiGa infosystems GmbH

In-app purchases

None

FaultKin Mobile

No in-app purchases

None

GST[AR]

No in-app purchases

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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