GST[AR] vs GMDE Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Browse geological models
- View models in AR
- Rotate and scale models
- Highlight model features
- Share AR sessions
- Customize AR settings
- Add custom model sources
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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.
GMDE Lite
This app allows users to record and visualize geological data, including points of interest, orientations, and contacts, on a map. It supports data exchange with other desktop and mobile applications and offers advanced tools for geological analysis and sketching.
- Record points of interest with photos and descriptions
- Annotate photos and create digital sketches
- Enter geological orientations via multiple methods
- Import/export data from other geological software
- Edit geological contacts by manipulating vertices
- Use device as a rangefinder for plotting points
- Display orientation data on stereographic projections
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GMDE Lite has been designed from the ground up with small phone-sized screens in mind although it also works very well on iPads and spectacularly on iPads with an Apple Pencil. We borrow the best from both GMDE Mobile and Stereonet Mobile and present that functionality in a clean, simple, map-centric interface. Data can be exchanged between GMDE Lite and Desktop, and imported from Stereonet Mobile, GIS programs, as well as uploaded or downloaded to/from StraboSpot. Some things GMDE Lite can do: • Set a point of interest (POI) at your current location or anywhere on the map which is immediately tagged with location time and date and to which you can attach a photo and an extended description. You can email a POI, complete with photo, to a field partner, Advisor, etc. • Annotate photos or make digital sketches attached to points of interest. • Enter an orientation by any of six methods: (1) using the device orientation, (2) tapping 3 points on the map and having the device calculate the orientation, (3) sighting along the contact plane either in the strike or dip direction, (4) best fit plane to selected vertices on a path, or (5) type typing in the orientation at the location that you specify. You can project a contact temporarily as a check on the validity of the orientation; the projected contact can be converted to a regular contact. • Read in and display POIs, orientations, and contacts on the map data from Stereonet Mobile or GMDE Desktop. Use copy and paste between devices registered to the same Apple ID using Apple HandOff technology. • Enter contacts by tapping and dragging a path, by recording a GPS track, or by projecting a planar orientation across the landscape. Edit contacts by lassoing and deleting vertices or tapping and dragging individual vertices (works way better on an iPad with Apple Pencil than it does with your finger on a relatively tiny iPhone screen). • Use the device camera/orientation as a rangefinder and plot a point of interest at the sighted location. Rapidly use the rangefinder to determine azimuth, inclination, slope, horizontal, and vertical distance to the sighted location. • Display orientation data on an equal area, lower hemisphere projection which can be filtered by data type. Mean vectors, cylindrical best fits, poles to planes, and rose diagrams can be displayed. • If you have a data connection, GMDE Lite can display your data on Apple Maps within the program as well as get point elevations from an online server and download map tiles for offline use. • Use a variety of icons and colors to represent different types of data. • Access all of your data on your device from, and upload to and download from, the Files app on the device. Upload to and download from StraboSpot. Copy and paste between GMDE Lite and Stereonet Mobile. Skills you need to take full advantage of GMDE Lite: GMDE Lite can be used "right out of the box" with a cellular data connection using an online satellite or road base map or downloadable map tiles, and online elevation server, in 2D to measure and collect strikes and dips, plot contacts, do 3-pt problems, etc. To experience the full power of GMDE Lite, and for complete offline operation (essential in remote field areas), you will need to know how to do the following: • Produce base maps from whatever source you want in MBTiles format. Because you are producing your own base maps you can use whatever you want (existing geologic maps, USGS Topo Maps, LiDAR hill shade images, etc.). Maps can be produced with my free desktop program MBTileMakerViewer. • Download and format digital elevation models (DEMs) in GridFloat or BIL format. Having a DEM on the device is what allows GMDE Lite to perform its magic such as calculating an orientation from three points. DEMs can be produced with my free program DEM Masher (requires GDAL). • Know enough about your digital devices to understand how to move files onto or off the device from/to your desktop computer.
Screenshots
Verdict
The clearest difference is update cadence: GMDE Lite at every 3 weeks against GST[AR]'s every 4 months. 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
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 GST[AR] against 5.0 for GMDE Lite. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
GST[AR] ships an update every 4 months, GMDE Lite every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | GST[AR] | GMDE Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | GiGa infosystems GmbH | Richard Allmendinger |
Customer experience
GST[AR]
GMDE Lite
In-app purchases
GST[AR]
No in-app purchases
GMDE Lite
No in-app purchases
![GST[AR] GST[AR]](https://cdn3.appshunter.io/i/Purple221/684d79799080d1e874f2bd30711bebcc/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/512x0w.png)






