Comparison

Soil Test Pro vs Spray Guide

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Soil Test Pro

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
Read full description

http://www.soiltestpro.com/ Soil Test Pro makes soil sampling easier for you as a grower or service provider. Save money and work smarter. Get lab results, fertilizer recommendations and controller files for all leading monitors. HOW IT WORKS http://www.soiltestpro.com/video/ FEATURES INCLUDE -- Unlimited access to Soil Test Pro’s Precision Ag Specialists -- Aerial imagery of all fields -- Unlimited farms and fields -- Get test results FAST in 5-7 days -- View complete soil testing history -- Integrated with John Deere Operations Center -- Integrated with Beck’s FARMserver IN THE FIELD - on your smart phone/tablet -- Work without cellular service -- Draw field boundaries with GPS -- High contrast viewing option for better visibility in sunlight -- Sample by Whole Field, Splits or Zones -- GPS Located bag numbers simplifies sampling -- Save time. Customers report 100-150 acres per hour on a 5-acre grid. AT YOUR DESK - on your Soil Test Pro Web Headquarters -- Print shipping sheets to send to the lab with your samples -- View and print lab results/analysis -- View and print fertilizer recommendation maps -- View and print your field maps -- Export variable rate controller files -- Draw or import field boundaries -- Automatic Data back-up Soil Test Pro supports most soil testing labs in the United States. Results are posted directly to your Web Headquarters. Our Precision Ag Specialists will help you with the recommendations and creating controller files for download or delivery to your service provider. Call Customer Service anytime 855-768-2900.

About

Spray Guide

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
Read full description

Spray Guide, from Plant Health Technologies, is an environmental stewardship app. It helps ensure applicators are mixing crop protection products in the proper sequence for uniform and safe applications. Following the proper mixing, sequence helps prevent product incompatibilities and can save applicators time and money by avoiding product loss and sprayer clean-out problems. Spray Guide also captures product use rates and application information and conveniently maintains comprehensive, accurate Spray Logs for easy record keeping, which are compliant with Worker Protection Standards. Records can also include local weather, nozzle used and GPS field location. KEY FEATURES • Mix Guide: receive a recommended mixing order based on the products selected • Mix Sheets: capture field size, spray volume, tank size and product use rates and receive per tank and per field volume requirements for accurate loading and easy documentation and compliance. • Spray Logs: allow you to conveniently record GPS location, time spent spraying and weather details. A notes section also allows for additional record keeping • EPA Number & Re-entry Interval: allows for compliance with Worker Protection Standards Nozzle Selection: enhances records for label compliance My Favorites: select your most-used products for easy access

Screenshots

Soil Test Pro4 screens
Spray Guide4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Soil Test Pro versus Spray Guide: the parameters behind the verdict, then further details
ParameterSoil Test ProSpray Guide
PriceFreeFree
Rating3.7 (14 ratings) — better3.0 (3 ratings)
Positive reviews42.9% of reviews—
Number of ratings14 — better3
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.610.0 — better
Further details — not scored
Size24 MB19 MB
Age rating4+4+
DeveloperTapLogic, LLCPrecision Laboratories, Inc.

Customer experience

Soil Test Pro

All ratings14 ratings
Positive57.1%
Neutral14.3%
Negative28.6%
Written reviews7 reviews
Positive42.9%
Neutral28.6%
Negative28.6%

Spray Guide

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%

In-app purchases

None

Soil Test Pro

No in-app purchases

1 purchases

Spray Guide

One-time1
  • Spray Guide Weather Integration$5.99

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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