Comparison

Soil Explorer 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

Soil Explorer

Discover detailed soil property and landscape maps for U.S. states and global soil distributions. Understand how map features relate to real-world observations. This educational tool uses data from USDA and USGS to illustrate complex soil-landscape relationships.

Highlights
  • Detailed soil property maps
  • Landscape visualizations
  • Global soil distribution maps
  • Field observation correlation
  • USDA NRCS data integration
  • USGS data integration
Features
Read full description

Explore detailed maps of soil properties and landscapes for various U.S. states, as well as small-scale maps of soil distributions for the world. Examine the details for a specific area, but also see the overview for a large area. Learn how features shown on the maps correspond to what you observe in the field. Soil Explorer utilizes detailed soil survey data from the USDA Natural Resources Conservation Service and data and maps from the U. S. Geological Survey and other sources to produce informative, highly engaging maps. These maps are designed to show the complex interrelationships between soil properties and the landscapes in which soils occur.

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

Soil Explorer4 screens
GST[AR]4 screens

Verdict

The call

The clearest difference is rating: GST[AR] at 5.0 against Soil Explorer's 4.1. GST[AR] also leads on update cadence (every 4 months vs every 11 months). Soil Explorer's advantage is ratings volume (9 vs 1) and iOS requirement (14.7 vs 16.4). On price, ads, in-app purchases and monetization model 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

GST[AR] holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Soil Explorer has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Soil Explorer ships an update every 11 months, GST[AR] every 4 months. The most recent releases landed on September 19, 2026 and July 7, 2026 respectively.

Scorecard4 real differences · 6 level
Soil Explorer versus GST[AR]: the parameters behind the verdict, then further details
ParameterSoil ExplorerGST[AR]
PriceFreeFree
Rating4.1 (9 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings9 — better1
Update frequencyEvery 11 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.7 — better16.4
Further details — not scored
Size172 MB2 MB
Age rating4+4+
DeveloperPurdue UniversityGiGa infosystems GmbH

In-app purchases

None

Soil Explorer

No in-app purchases

None

GST[AR]

No in-app purchases

Questions

Is Soil Explorer free?
Soil Explorer 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, Soil Explorer or GST[AR]?
GST[AR] is rated higher. Soil Explorer averages 4.1 out of 5 from 9 ratings, while GST[AR] averages 5.0 from 1 ratings.
Do Soil Explorer or GST[AR] have ads?
Neither Soil Explorer nor GST[AR] shows ads.
Which is updated more often, Soil Explorer or GST[AR]?
Soil Explorer ships an update every 11 months, and GST[AR] every 4 months. Most recently, Soil Explorer was updated on September 19, 2026 and GST[AR] on July 7, 2026.

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