# Soil Explorer vs IR Theory Explorer

The clearest difference is price: Soil Explorer at Free against IR Theory Explorer's $1.99. Soil Explorer also leads on ratings volume (9 vs 1) and iOS requirement (14.7 vs 26.4). IR Theory Explorer's advantage is rating (5.0 vs 4.1). On ads, in-app purchases and device support there is nothing between them.

Soil Explorer is free to download; IR Theory Explorer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IR Theory Explorer 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.

## The numbers

| Metric | Soil Explorer | IR Theory Explorer |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.1 (9 ratings)](https://appshunter.io/ios/app/soil-explorer/id996159565/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ir-theory-explorer/id6763011305/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Monetization | **Free** | Paid |
| Size | 172 MB | 0 MB |
| Requires iOS | **14.7** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Purdue University](https://appshunter.io/developer/371741257) | [Jennifer Cannon](https://appshunter.io/developer/1895119860) |

## 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


### IR Theory Explorer

[App page](https://appshunter.io/ios/app/ir-theory-explorer/id6763011305)

Explore and understand International Relations theories. This app helps you learn about key authors, compare different theories, and see how they apply to historical and current events.

**Highlights:** Learn International Relations theories, Understand key authors, Compare and contrast theories, Apply theories to events, Educational content

**Features:** macOS Compatibility, 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 IR Theory Explorer free?

IR Theory Explorer costs $1.99, with no in-app purchases.

### Which has better reviews, Soil Explorer or IR Theory Explorer?

IR Theory Explorer is rated higher. Soil Explorer averages 4.1 out of 5 from 9 ratings, while IR Theory Explorer averages 5.0 from 1 ratings.

### Do Soil Explorer or IR Theory Explorer have ads?

Neither Soil Explorer nor IR Theory Explorer shows ads.

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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.*