# Spray Rates — Spray Boom Calibration

> Spray Boom Calibration (iPhone/iPad app by PITCHLINKS LIMITED.)

- Source: https://appshunter.io/ios/app/spray-rates/id1593815945 (this page in markdown: same URL + `.md`)
- Developer: [PITCHLINKS LIMITED](https://appshunter.io/developer/1593816127)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 30 MB
- Languages: American English
- Released: 2021-11-06
- Data updated: 2026-05-18
- User reviews in markdown: https://appshunter.io/ios/app/spray-rates/id1593815945/reviews.md

## What is Spray Rates?

This app is designed to help accurately calibrate your spray solution, built by an agricultural pilot with real-world industry experience.

Created from a pilot’s point of view, the app makes it easy to experiment with different spray settings and instantly see clear, plain-English results you can trust.

Spray Rates is based on three key inputs:
• Speed of travel or flight
• Swath width
• Volume of output

Calculations use the standard industry formula to determine hectares covered per minute, helping you dial in accurate and repeatable spray rates.

Simple, practical, and built for use in the field — give it a try and feel free to leave a review if you find it useful.

Want to show your support? A one-time, non-consumable in-app purchase is available to remove ads.

For the Terms of Use (EULA) for this application, please refer to Apple's Standard Licensed Application End User Agreement at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

View PitchLinks terms & conditions and privacy policy: https://www.pitchlinks.co.nz/privacy

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Spray Rates Remove Ads | $5.99 | one-time |



## Version history (last 4 releases)

### 2.0 — 2026-02-12

What’s New in Version 2

• Save multiple nozzle calibrations for quick reuse
• New Recommend feature suggests valid setup configurations based on your litres per nozzle, nozzle count, and target application rate
• Optional one-time purchase to remove ads and support future development.

### 1.4 — 2022-08-02

VERSION 1.4
Added Apple Dark Mode Support
Minor color adjustments to screens

VERSION 1.3
Added the ability to input settings using the keyboard
Added a What's-New page to highlight new features
Added advertising to keep the app free to end users.

### 1.3 — 2022-07-31

VERSION 1.3
Added the ability to input settings using the keyboard
Added a What's-New page to highlight new features
Added advertising to keep the app free to end users.

### 1.0 — 2021-11-06

No release notes.

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## More apps by PITCHLINKS LIMITED

- [PD Altitude](https://appshunter.io/ios/app/pd-altitude/id1664694408)
- [PD Altitude Plus](https://appshunter.io/ios/app/pd-altitude-plus/id6446378454)
- [AgPilot](https://appshunter.io/ios/app/agpilot/id6469440414)
- [AgPilot 2](https://appshunter.io/ios/app/agpilot-2/id6670776843)

All apps by PITCHLINKS LIMITED: https://appshunter.io/developer/1593816127

## Related topics

[aerial sprays](https://appshunter.io/ios/topics/aerial-sprays) · [spray nozzle calculator](https://appshunter.io/ios/topics/spray-nozzle-calculator) · [calibrate my sprayer](https://appshunter.io/ios/topics/calibrate-my-sprayer)

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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 2026-05-18.*