# Spot Spray Tank Mix Calculator — Herbicide & Pesticide Rates > Agrochemical ratio measurement tool for agricultural chemicals. (iPhone/iPad app by William Keene.) - Source: https://appshunter.io/ios/app/spot-spray-tank-mix-calculator/id6755640749 (this page in markdown: same URL + `.md`) - Developer: [William Keene](https://appshunter.io/developer/1836616486) - Category: Utilities, Productivity - Price: Free with in-app purchases (on sale, was $4.99) - Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 4 MB - Languages: American English - Released: 2026-06-06 - Data updated: 2026-09-07 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/spot-spray-tank-mix-calculator/id6755640749/reviews.md ## What is Spot Spray Tank Mix Calculator? Enter your tank size and label rate—Spot Spray calculates exact amounts in seconds, whether the label shows oz/acre, g/ha, or a % solution. Works for herbicides, pesticides, fungicides, fertilizers, adjuvants, surfactants, and other products. Works offline Single- or multi-ingredient recipes Save, print, and share as PDF Spray Log — record chemical, rate, site, date, and time after a mix iCloud sync across iPhone, iPad, and Mac ## Key features - Instant, accurate mixing calculations - Dual modes: Label rate/acre or % solutions - Imperial/Metric units with auto-convert - Offline with iCloud recipe sync - Pro accuracy for herbicides, pesticides, fertilizers - Easy 4-step process ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Full Version | $4.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/spot-spray-tank-mix-calculator/id6755640749/reviews.md ### 5/5 — Very Convenient *2025-12-02* This app is an excellent tool for farmers and agronomists. It makes spray calculations quick and accurate, reducing guesswork and saving time in the field. The interface is simple and easy to use, even for those who aren’t tech-savvy. I appreciate the ability to adjust for different tank sizes and application rates—it’s a huge help for planning and efficiency. Overall, a must-have app for anyone managing crop protection ## Frequently asked questions about Spot Spray Tank Mix Calculator ### What is Spot Spray Tank Mix Calculator? Spot Spray Tank Mix Calculator is a utility app designed to provide instant and accurate mixing calculations for agricultural chemicals. It supports various modes and units for precise ratio measurement. ### Does Spot Spray Tank Mix Calculator have ads? No, Spot Spray Tank Mix Calculator is ad-free. The app offers a one-time purchase for full unlock, ensuring an uninterrupted user experience without advertisements. ### What units does Spot Spray Tank Mix Calculator support? The app supports both Imperial and Metric units, including gallons, quarts, pints, ounces, pounds, liters, milliliters, grams, and kilograms. It also features auto-conversion between units. ### Can I use Spot Spray Tank Mix Calculator offline? Yes, Spot Spray Tank Mix Calculator can be used offline. Recipes can also be synced across devices using iCloud for seamless access. ### What is the pricing for Spot Spray Tank Mix Calculator? The app is free to download and offers a free trial with five calculations and recipe saves. A one-time purchase unlocks all features permanently, with no ads or subscriptions. ### What devices is Spot Spray Tank Mix Calculator available on? Spot Spray Tank Mix Calculator is available on Mac, iPhone, and iPad, making it accessible across multiple Apple platforms. ### How often is Spot Spray Tank Mix Calculator updated? The latest version is 2.5, and the app was last updated on April 14, 2026. This indicates a recent update, suggesting ongoing development and support. ### What is the age rating for Spot Spray Tank Mix Calculator? Spot Spray Tank Mix Calculator has an age rating of 4+, making it suitable for a wide range of users, including younger individuals involved in agricultural tasks. ## Version history (last 5 releases) ### 4.2 — 2026-08-22 Spray Log records each application — chemical, rate, site, date, and time. After a mix, tap Log. Share or print selected records. Syncs via iCloud. ### 4.1 — 2026-07-19 Updated Age Ratings about Social Media. ### 4.0 — 2026-06-25 Faster workflow with step-by-step guidance for every calculation. ### 3.2 — 2026-06-16 Version 3.2 • Free tier: 3 calculations and 2 recipe saves before unlock • One-time unlock for unlimited calculations and saves — no ads, no subscription • Improvements across iPhone, iPad, and native Mac ### 3.1 — 2026-06-07 • Guided step-by-step mixing • Single- and multi-ingredient recipes • PDF share and print from Spray mixes for those workers in the field ## More apps by William Keene - [HiLoCard](https://appshunter.io/ios/app/hilocard/id6751750328) - [EPIC - NASA Explorer](https://appshunter.io/ios/app/epic-nasa-explorer/id6761562062) - [DotDay](https://appshunter.io/ios/app/dotday/id6761635100) - [Coltons](https://appshunter.io/ios/app/coltons/id6761658721) All apps by William Keene: https://appshunter.io/developer/1836616486 ## Related topics [spot spray tank mix calculator](https://appshunter.io/ios/topics/spot-spray-tank-mix-calculator) · [pesticide mix calculator](https://appshunter.io/ios/topics/pesticide-mix-calculator) · [tank mix calculator](https://appshunter.io/ios/topics/tank-mix-calculator) --- *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 2026-09-07.*