# Soil Explorer vs DeepTime for Geology

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.

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.

## The numbers

| Metric | Soil Explorer | DeepTime for Geology |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (9 ratings)](https://appshunter.io/ios/app/soil-explorer/id996159565/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416/reviews)** |
| Number of ratings | **9** | 8 |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 172 MB | 1 MB |
| Requires iOS | **14.7** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Purdue University](https://appshunter.io/developer/371741257) | [Hunt Mountain Software](https://appshunter.io/developer/328710008) |

## What reviewers say

### Soil Explorer

[App page](https://appshunter.io/ios/app/soil-explorer/id996159565)

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:** Vision Pro support

**In-app purchases:** none


### DeepTime for Geology

[App page](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Soil Explorer free?

Soil Explorer is free to download, with no in-app purchases.

### Is DeepTime for Geology free?

DeepTime for Geology is free to download, with no in-app purchases.

### Which has better reviews, Soil Explorer or DeepTime for Geology?

DeepTime for Geology is rated higher. Soil Explorer averages 4.1 out of 5 from 9 ratings, while DeepTime for Geology averages 5.0 from 8 ratings.

### Do Soil Explorer or DeepTime for Geology have ads?

Neither Soil Explorer nor DeepTime for Geology shows ads.

### Which is updated more often, Soil Explorer or DeepTime for Geology?

Soil Explorer ships an update every 11 months, and DeepTime for Geology every 3 months. Most recently, Soil Explorer was updated on November 3, 2026 and DeepTime for Geology on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*