# Soil Explorer vs FertAdvisor

The clearest difference is review sentiment: FertAdvisor at 100% against Soil Explorer's 0%. FertAdvisor also leads on rating (5.0 vs 4.1) and iOS requirement (9.0 vs 14.7). Soil Explorer's advantage is ratings volume (9 vs 3). On price, update cadence, 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.

FertAdvisor holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews point the same way: 0% of Soil Explorer's written reviews are positive against 100% of FertAdvisor's.

Soil Explorer ships an update every 11 months, FertAdvisor every 10 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Soil Explorer | FertAdvisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (9 ratings)](https://appshunter.io/ios/app/soil-explorer/id996159565/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fertadvisor/id1454017899/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 10 months** |
| Monetization | Free | Free |
| Size | 172 MB | 65 MB |
| Requires iOS | 14.7 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Purdue University](https://appshunter.io/developer/371741257) | [University of Connecticut](https://appshunter.io/developer/552022925) |

## 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


### FertAdvisor

[App page](https://appshunter.io/ios/app/fertadvisor/id1454017899)

This app helps homeowners and turfgrass professionals calculate fertilizer needs for lawns. It provides tools for spreader calibration, label interpretation, and application guidance through animations and videos.

**Highlights:** Fertilizer amount calculation, Spreader calibration, Fertilizer label reading, Application technique guidance, Soil sampling videos, Area calculation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Soil Explorer free?

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

### Is FertAdvisor free?

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

### Which has better reviews, Soil Explorer or FertAdvisor?

FertAdvisor is rated higher. Soil Explorer averages 4.1 out of 5 from 9 ratings, while FertAdvisor averages 5.0 from 3 ratings.

### Do Soil Explorer or FertAdvisor have ads?

Neither Soil Explorer nor FertAdvisor shows ads.

### Which is updated more often, Soil Explorer or FertAdvisor?

Soil Explorer ships an update every 11 months, and FertAdvisor every 10 months. Most recently, Soil Explorer was updated on October 24, 2026 and FertAdvisor on October 12, 2026.

---

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