Soil Explorer vs DeepTime for Geology
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.
DeepTime for Geology
Explore an interactive geological time scale with detailed information on each unit, including GSSP definitions and color codes. Search for terms and view GSSPs on a global map. Ideal for geologists, students, and Earth history enthusiasts.
- Interactive geological time scale
- Detailed GSSP definitions
- CMYK and RGB color codes
- Searchable by name or age
- Global GSSP map integration
- Tips for using time terms
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DeepTime puts geological time at your fingertips. DeepTime is a full interactive version of the latest geological time scale: tap on any time unit to see more detail about it, including how its GSSP (golden spike) is defined. It even has the CMYK and RGB color codes for every time unit, great for when you need to have the right color for a map or chart. Even more, it is completely searchable by name or age. Come across an unfamiliar time term in an older paper? Search for it, and you'll see how it relates to the modern time scale. What's more is that all the GSSPs (the golden spikes) are shown on a gorgeous geological map of the world (courtesy of macrostrat.org), which shows their context in stunning detail. Tips for using time terms are also included with simple examples. Whether you are a geologist, a student, a science writer, or just a fan of Earth history, DeepTime will become your go-to resource for understanding geological time.
Screenshots
Verdict
The clearest difference is review sentiment: DeepTime for Geology at 80% against Soil Explorer's 0%. DeepTime for Geology also leads on rating (5.0 vs 4.1) and update cadence (every 3 months vs every 11 months). Soil Explorer's advantage is iOS requirement (14.7 vs 26.0). 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.
DeepTime for Geology holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews point the same way: 0% of Soil Explorer's written reviews are positive against 80% of DeepTime for Geology's.
Soil Explorer ships an update every 11 months, DeepTime for Geology every 3 months. Both last shipped on November 3, 2026.
| Parameter | Soil Explorer | DeepTime for Geology |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (9 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 0.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 9 — better | 8 |
| Update frequency | Every 11 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.7 — better | 26.0 |
| Further details — not scored | ||
| Size | 172 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Purdue University | Hunt Mountain Software |
Customer experience
Soil Explorer
DeepTime for Geology
In-app purchases
Soil Explorer
No in-app purchases
DeepTime for Geology
No in-app purchases
Questions
Is Soil Explorer free?
Is DeepTime for Geology free?
Which has better reviews, Soil Explorer or DeepTime for Geology?
Do Soil Explorer or DeepTime for Geology have ads?
Which is updated more often, Soil Explorer or DeepTime for Geology?
Other comparisons
