---
title: "Spread Test Calculator - Reviews, Revenue and Downloads in Australia | Apple App Store"
description: "Calculates the SIZE GUIDE NUMBER and UNIFORMITY INDEX value from the results of your standard fertiliser sieve. This is used to determine the characteristics of your fertiliser."
---

# Spread Test Calculator — Australia
> Calculate SGN and UI values

![Spread Test Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/4a/60/b9/4a60b9b1-ded2-d9d5-26a3-3246e2cf1e20/AppIcon-0-0-1x_U007emarketing-0-8-0-0-85-220.png/434x0w.png)

**Developer:** [Brian Dockerty](https://apptail.io/developer/brian-dockerty-kCTb) (New Zealand)
**Category:** Utilities
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** DockertyElectronics.SpreadTestCalculator
**Store:** Apple App Store
**Country:** Australia
**Version:** 1.0.3 (released 2025-12-13)
**Original Release:** 2025-04-13
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/au/app/app/id6744341834)
**AppTail Page:** [https://apptail.io/app/spread-test-calculator-MSpv/australia](https://apptail.io/app/spread-test-calculator-MSpv/australia)

## Spread Test Calculator Description
Calculates the SIZE GUIDE NUMBER and UNIFORMITY INDEX value from the results of your standard fertiliser sieve.
This is used to determine the characteristics of your fertiliser.

## Spread Test Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b6/09/70/b6097017-bf66-5adf-bc6f-ee13a712e8e9/Simulator_Screenshot_-_iPhone_15_Pro_Max_-_2025-04-11_at_09.42.25.png/2796x1290.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2e/d1/52/2ed15212-fca1-63ef-cb83-fc269f91f4a4/Simulator_Screenshot_-_iPhone_15_Pro_Max_-_2025-04-11_at_09.42.04.png/2796x1290.png)







## Spread Test Calculator Available In
- [Australia](https://apptail.io/app/spread-test-calculator-MSpv/australia)
- [Colombia](https://apptail.io/app/spread-test-calculator-MSpv/colombia)
- [Kuwait](https://apptail.io/app/spread-test-calculator-MSpv/kuwait)
- [New Zealand](https://apptail.io/app/spread-test-calculator-MSpv/new-zealand)
- [United States](https://apptail.io/app/spread-test-calculator-MSpv/united-states)

---

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