# Soil Test Pro vs Spray Guide

The clearest difference is rating: Soil Test Pro at 3.7 against Spray Guide's 3.0. Soil Test Pro also leads on in-app purchases (none vs 1) and ratings volume (14 vs 3). Spray Guide's advantage is iOS requirement (10.0 vs 15.6). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. Spray Guide sells 1 one-off in-app purchase. Soil Test Pro asks for nothing beyond the download.

Soil Test Pro holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 14 and 3 respectively.

Soil Test Pro ships an update every 2 months, Spray Guide every 3 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Soil Test Pro | Spray Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (14 ratings)](https://appshunter.io/ios/app/soil-test-pro/id485742991/reviews)** | [3.0 (3 ratings)](https://appshunter.io/ios/app/spray-guide/id539618335/reviews) |
| Number of ratings | **14** | 3 |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 24 MB | 19 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TapLogic, LLC](https://appshunter.io/developer/464313028) | [Precision Laboratories, Inc.](https://appshunter.io/developer/417355584) |

## 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


### Spray Guide

[App page](https://appshunter.io/ios/app/spray-guide/id539618335)

This app helps agricultural professionals ensure crop protection products are mixed in the correct sequence for safe and effective application. It also maintains detailed spray logs compliant with Worker Protection Standards, including weather and location data.

**Highlights:** Recommended mixing order, Mix sheets for accurate loading, Comprehensive spray logs, EPA Number & Re-entry Interval tracking, Nozzle selection for compliance, Favorite products for quick access

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spray Guide Weather Integration | $5.99 | one-time |


## Frequently asked questions

### Is Soil Test Pro free?

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

### Is Spray Guide free?

Spray Guide is free to download, with in-app purchases available.

### Which has better reviews, Soil Test Pro or Spray Guide?

Soil Test Pro is rated higher. Soil Test Pro averages 3.7 out of 5 from 14 ratings, while Spray Guide averages 3.0 from 3 ratings.

### Do Soil Test Pro or Spray Guide have ads?

Neither Soil Test Pro nor Spray Guide shows ads.

### Which is updated more often, Soil Test Pro or Spray Guide?

Soil Test Pro ships an update every 2 months, and Spray Guide every 3 months. Most recently, Soil Test Pro was updated on October 9, 2026 and Spray Guide on October 2, 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.*