# Soil Test Pro vs Hay App

The clearest difference is rating: Soil Test Pro at 3.7 against Hay App's 3.5. Soil Test Pro also leads on device support (3 vs 1) and ratings volume (14 vs 4). Hay App's advantage is iOS requirement (12.4 vs 15.6). 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.

Soil Test Pro holds the better App Store score, 3.7 against 3.5. Both are backed by a comparable volume of ratings — 14 and 4 respectively.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 7, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Soil Test Pro | Hay App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (14 ratings)](https://appshunter.io/ios/app/soil-test-pro/id485742991/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/hay-app/id1063775910/reviews) |
| Number of ratings | **14** | 4 |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 24 MB | 69 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [TapLogic, LLC](https://appshunter.io/developer/464313028) | [Harvest Tec, Inc](https://appshunter.io/developer/975695298) |

## What reviewers say

### Soil Test Pro

[App page](https://appshunter.io/ios/app/soil-test-pro/id485742991)

Streamline your soil sampling process with this app. It offers GPS field boundary drawing, offline capabilities, and direct integration with leading monitors for fertilizer recommendations and controller files. Access lab results and historical data easily.

**Highlights:** GPS field boundary drawing, Offline work capability, Lab results in 5-7 days, Fertilizer recommendations, Controller file export, Soil testing history, Aerial imagery

**Features:** Vision Pro support

**In-app purchases:** none


### Hay App

[App page](https://appshunter.io/ios/app/hay-app/id1063775910)

Control your automatic hay preservative applicator directly from your iPad. Access operator manuals, repair parts, and preservative information. Monitor baling speed, moisture content, and preservative usage in real-time.

**Highlights:** iPad control for hay preservative applicators, Real-time moisture content display, Baling speed and tonnage monitoring, Preservative volume and application rate tracking, Access to operator manuals and repair parts, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Soil Test Pro free?

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

### Is Hay App free?

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

### Which has better reviews, Soil Test Pro or Hay App?

Soil Test Pro is rated higher. Soil Test Pro averages 3.7 out of 5 from 14 ratings, while Hay App averages 3.5 from 4 ratings.

### Do Soil Test Pro or Hay App have ads?

Neither Soil Test Pro nor Hay App shows ads.

### Which is updated more often, Soil Test Pro or Hay App?

Soil Test Pro ships an update every 3 months, and Hay App every 3 months. Most recently, Soil Test Pro was updated on September 7, 2026 and Hay App on August 17, 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.*