# SprayMaster: Spray Calculator — Tank Mix, Calibration & Rates

> Tank Mix, Calibration & Rates (iPhone/iPad app by Grima Hdez.)

- Source: https://appshunter.io/ios/app/spraymaster-spray-calculator/id6789945138 (this page in markdown: same URL + `.md`)
- Developer: [Grima Hdez](https://appshunter.io/developer/1741481582)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-08-04
- Data updated: 2026-08-12
- User reviews in markdown: https://appshunter.io/ios/app/spraymaster-spray-calculator/id6789945138/reviews.md

## What is SprayMaster?

SprayMaster is the fast, no-nonsense calculator for licensed pesticide applicators — ag, turf, ornamental, pest control, and right-of-way.

FREE
• Tank Mix — turn any label rate (per acre, per 1,000 ft², or per gallon) into exactly how much product goes in the tank, plus acres per tank and whole-job totals.
• Mix Ratio — quick dilution for handheld and backpack sprayers, with the equivalent percent solution.

PRO
• Sprayer Calibration — find your true gallons-per-acre by the nozzle & speed formula or the 1/128-acre catch method (the one on the cert exam).
• Rate Converter — lb/acre ↔ oz/1,000 ft², % ↔ oz/gal, and more.
• Area / Acreage — size a field from ground measurements.
• Calculation history, and no ads.

The label is the law. SprayMaster does the arithmetic; you follow the product label, its restrictions, and your state's regulations. It ships no product rates and makes no recommendations.

Terms of Use (EULA): https://ghapps1.wordpress.com/terms-condition/
Privacy Policy: https://ghapps1.wordpress.com/privacy-policy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| SprayMaster Pro | $39.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-08-11

• Bug fixes and performance improvements

### 1.0.0 — 2026-08-04

No release notes.

## More apps by Grima Hdez

- [Decibel Sound Meter \| dB Level](https://appshunter.io/ios/app/decibel-sound-meter-db-level/id1501310833)
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- [Random: Number, Bingo, Dice](https://appshunter.io/ios/app/random-number-bingo-dice/id1501313323)
- [Drawing And Painting](https://appshunter.io/ios/app/drawing-and-painting/id1501400328)
- [Voice Recorder & To do list](https://appshunter.io/ios/app/voice-recorder-and-to-do-list/id1516155953)
- [Fit as - Register Your Steps](https://appshunter.io/ios/app/fit-as-register-your-steps/id1521810948)

All apps by Grima Hdez: https://appshunter.io/developer/1741481582

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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 2026-08-12.*