# FS Adjuvants

> Agricultural tank mixing assistant with spray logging and weather integration. (iPhone/iPad app by Precision Laboratories, Inc..)

- Source: https://appshunter.io/ios/app/fs-adjuvants/id428239018 (this page in markdown: same URL + `.md`)
- Developer: [Precision Laboratories, Inc.](https://appshunter.io/developer/417355584)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 3.00/5 from 6 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 18 MB
- Languages: American English
- Released: 2011-04-01
- Data updated: 2026-06-05
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fs-adjuvants/id428239018/reviews.md

## What is FS Adjuvants?

FS Adjuvants from GROWMARK, Inc. is designed to assist agricultural applicators with the proper tank mixing sequence of crop protection products.  FS Adjuvants also captures product use rates and application information with Mix Sheets and conveniently maintains accurate Spray Logs for easy record keeping.

Following the proper mixing sequence helps users prevent product incompatibilities and can save applicators time and money by avoiding product loss and sprayer clean-out problems.  

The available Weather Integration feature within the Spray Log helps applicators prevent spray drift risk by displaying weather information, including wind speed and direction, prior to spraying, assisting with documentation and compliance.

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 rate per acre, per tank and per field for accurate documentation and compliance.  Easily share to integrate with existing records.
• Spray Logs: stopwatch and notifications (every 60 minutes) allows you to conveniently record GPS location, time spent spraying and weather details. A notes section also allows for additional record keeping
• Weather Integration: provides wind speed and direction, temperature and conditions integrated with Spray Logs, helping reduce spray drift risks by capturing weather conditions prior to spraying(in-app purchase)
• Mixing Precautions: alerts users of potential tank mixing issues.  Note: if an issue is not listed, please let us know through the feedback section and it will be added after review
• My Favorites: select your most-used products for easy access
• Enhanced Sharing: email, Facebook and Twitter

Included is a database of over 1,300 crop protection products from over 17 manufacturers. Mixing orders can contain up to 19 products from the following categories: 
• Herbicides (includes PGRs and Defoliants)
• Fungicides (includes Bactericides)
• Insecticides (includes Miticides and IGRs)
• Adjuvants
• FoliarNutrition

Please read and follow all labels to ensure product compatibility.

## Key features

- Tank mixing order guide
- Mix Sheets for product use rates
- Spray Logs with GPS and weather
- Weather Integration for drift reduction
- Mixing Precautions alerts
- Product database with 1300+ items

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| FS Adjuvants Weather Integration | $0.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/fs-adjuvants/id428239018/reviews.md

### 1/5 — Can’t log in

*2025-04-08*

Doesn’t allow me to sign in or create an account. When you click “create account” after entering your details it just blinks and does nothing.

### 1/5 — Doesn’t work

*2024-04-01*

Can’t get it to allow me to sign in or create an account.

### 5/5 — North central Iowa

*2018-12-27*

I like this app, it allows me to check myself before I spray. I can’t always get ahold of my crop specialist in season, and this allows me to have confidence in mixing & application of my chemicals.

### 5/5 — Nice update

*2013-05-27*

I like the iPhone 4 optimizations

### 5/5 — Hak

*2011-06-23*

Bjsja

## Frequently asked questions about FS Adjuvants

### What is FS Adjuvants?

FS Adjuvants is a utility app designed to help agricultural applicators with the correct tank mixing sequence of crop protection products. It also captures application details and maintains accurate spray logs.

### How does FS Adjuvants help prevent product incompatibilities?

The app provides a Mix Guide that recommends a mixing order based on the selected products, and alerts users to potential tank mixing issues through Mixing Precautions.

### What information is captured in the Spray Logs?

Spray Logs allow users to record GPS location, time spent spraying, and weather details. A notes section is also available for additional record keeping.

### Does FS Adjuvants have ads?

No, FS Adjuvants does not contain advertisements.

### What is the cost of FS Adjuvants?

FS Adjuvants is free to download and use. However, the Weather Integration feature is available as an in-app purchase.

### What devices is FS Adjuvants compatible with?

FS Adjuvants is available for iPhone and iPod devices.

### How often is FS Adjuvants updated?

The latest version, 5.2, was released on May 4, 2019. Updates are provided by Precision Laboratories, Inc. to ensure the app's functionality and database accuracy.

### What is the age rating for FS Adjuvants?

FS Adjuvants has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 5.2 — 2019-05-04

Bug Fixes

### 5.1 — 2017-11-25

- Bug Fixes

### 5.0 — 2017-08-13

New Upgrade Features

User Registration and Login
• Backup/restore feature for more secure data
• Share data across devices
Record Nozzle Type
• Keep track of the nozzle used in the spray log feature
Free & Opt-in Weather
• Weather integration is now free
• Optional record weather data at the beginning of spray log
Air Print
• Option to print spray logs and mix sheets directly from device
More Resources
• More product info for products in the app, including data sheets
EPA# and Reentry Interval
• Make spray log records compliant with Worker Protection Standards

### 4.0 — 2016-09-21

- Bug fixes and UI improvements

### 3.9 — 2015-12-03

- Minor Bug Fixes

## Apps similar to FS Adjuvants

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Flow-X](https://appshunter.io/ios/app/flow-x/id1505464315) | — | Free | Utilities |
| [Seed Return](https://appshunter.io/ios/app/seed-return/id1507771849) | — | Free | Utilities |
| [MRTN Rate Calculator](https://appshunter.io/ios/app/mrtn-rate-calculator/id560788301) | 5.0 (1) | Free | Utilities |
| [Spray Log Pro® - Farm Utility](https://appshunter.io/ios/app/spray-log-pro-farm-utility/id6475281248) | 5.0 (2) | Free | Utilities |
| [Load Check](https://appshunter.io/ios/app/load-check/id1481504126) | 3.7 (6) | Free | Utilities |
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## More apps by Precision Laboratories, Inc.

- [Mix Tank - Tank Mixing Order](https://appshunter.io/ios/app/mix-tank-tank-mixing-order/id417355581)
- [Spray Guide](https://appshunter.io/ios/app/spray-guide/id539618335)

All apps by Precision Laboratories, Inc.: https://appshunter.io/developer/417355584

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*