Soil Explorer vs Stereonet Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Detailed soil property maps
- Landscape visualizations
- Global soil distribution maps
- Field observation correlation
- USDA NRCS data integration
- USGS data integration
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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.
Stereonet Mobile
This app assists geologists in collecting, visualizing, and analyzing geological orientation data. It offers automatic data entry using device sensors and augmented reality, manual input options, and various plotting and calculation tools for geological features.
- Automatic data entry via device orientation
- Augmented reality for strike and dip measurement
- Manual data entry via stereonet or text fields
- Plotting of lines and planes with user-defined types
- Basic geological calculations (rotations, angles, slope stability)
- Plotting of mean vectors, rose diagrams, and contour lines
- View plots from any orientation
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Stereonet Mobile is designed to help you collect, visualize, and analyze geological orientation data. It is a companion to my Stereonet program for desktop computers. As such I have tried to incorporate the basic functionality of that program, taking into account the inherent limitations of mobile devices. Some of the basic tasks that one can perform with Stereonet Mobile include: • 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. It is the only geology compass app that can use augmented reality to record the strike and dip of planes using the sighting method and the device camera. • Provide manual data entry via either tapping and dragging on the stereonet or by typing values into text fields • Plot lines and planes, which can be tagged using one of as many user defined data types (e.g., bedding, cleavage, slickensides, etc.) as you want • Carry out basic calculations such as: rotations about any axis, planes from poles or poles from planes, measure angles between lines and between planes, and basic slope stability calculations • Plot mean vectors, cylindrical best fits, rose diagrams, and contour lines. • View the plots from any orientation, not just looking straight down into the lower hemisphere • See the location of a datum on a map or satellite image (if you have an internet connection) • Show realtime changes to the stereonet projection to help students understand the geometry of the device better • Provide basic input and output of data using standard iOS conventions • Works on iPhones or iPads. The program will work on iPods or iPads lacking a cellular data connection but those devices have fewer sensors and thus cannot be used in automatic data collection mode.
Screenshots
Verdict
The clearest difference is review sentiment: Stereonet Mobile at 73% against Soil Explorer's 0%. Stereonet Mobile also leads on update cadence (monthly vs every 11 months) and rating (4.5 vs 4.1). On price, ratings volume, ads and in-app purchases 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.
Stereonet Mobile holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 9 and 13 respectively. Written reviews point the same way: 0% of Soil Explorer's written reviews are positive against 73% of Stereonet Mobile's.
Soil Explorer ships an update every 11 months, Stereonet Mobile monthly. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | Soil Explorer | Stereonet Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (9 ratings) | 4.5 (13 ratings) — better |
| Positive reviews | 0.0% of reviews | 72.7% of reviews — better |
| Number of ratings | 9 | 13 — better |
| Update frequency | Every 11 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.7 — better | 15.0 |
| Further details — not scored | ||
| Size | 172 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Purdue University | Richard Allmendinger |
Customer experience
Soil Explorer
Stereonet Mobile
In-app purchases
Soil Explorer
No in-app purchases
Stereonet Mobile
No in-app purchases
Questions
Is Soil Explorer free?
Is Stereonet Mobile free?
Which has better reviews, Soil Explorer or Stereonet Mobile?
Do Soil Explorer or Stereonet Mobile have ads?
Which is updated more often, Soil Explorer or Stereonet Mobile?
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