New per-acre mode: label rate per acre plus sprayer GPA gives product per tank. Plus oz/gal, oz per 1,000 sq ft and % solution. Scan the jug, log every spray. Offline.
Spray Mix & Tank Calculator gets you the right amount of product for your tank — fast. Built for pest control techs, lawn care pros, and homeowners mixing pesticides, herbicides, insecticides, fungicides, liquid fertilizer, disinfectants — any concentrate you mix with water.
FOUR MODES
• oz per gallon (or mL per L)
• oz per 1,000 sq ft with application volume (or mL–g per 100 m²)
• % solution with active-ingredient adjustment
• Per acre: label rate per acre and sprayer GPA give product per tank, acres per tank, and tanks per job
BUILT FOR THE FIELD
• Works fully offline — no account, no sign-up
• Tank presets and metric/imperial toggle
• Practical rounding with lbs/kg conversions
• Loads per job: see how many tank fills a job takes
• Share a clean mix card with your crew
SAVE TIME ON EVERY JOB
• My Products: save your go-to products and rates, reload them in one tap
• Barcode scan: point at the jug and jump straight to your saved mix
• Spray Log: record every application (site, product, rate, notes) and export your records anytime
• Reapply reminders at 7, 14, 21 or 30 days
• History with Mix Again for repeat jobs
Enter the label rate, pick your tank size, tap Calculate. Done.
FREE, WITH AN OPTIONAL ONE-TIME UPGRADE
Every feature is free and ad-supported. Remove ads for good with a one-time $0.99 purchase, or watch a short video for 24 hours without ads. No subscriptions.
IMPORTANT
This app is a calculator only. It does not recommend rates, validate labels, or provide pesticide advice. Always read and follow the specific product label for the chemical you are applying.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
5.0
out of 5
3 Ratings
• New per-acre mode: enter the label rate per acre (fl oz, pt, qt, gal, oz or lb), your sprayer's GPA and tank size, and get product per tank, acres per tank, and how many tanks a job takes.
• Remove ads for good with a one-time $0.99 purchase (Settings > Ads), or watch a short video for 24 hours without ads.
• Fewer full-screen ads: at most 3 a day.
Version 1.14.0
The developer, Mike Watson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Location
Identifiers
Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
Location
Identifiers
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
Dark Interface
Information
Seller
Mike Watson
Size
49.7 MB
Category
Utilities
Compatibility
Requires iOS 15.1 or later.
iPhone Requires iOS 15.1 or later.
iPad Requires iPadOS 15.1 or later.
iPod touch Requires iOS 15.1 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.