# RustCalc

> RustCalc (iPhone/iPad app by Roedolf Johannes Nieuwenhuis.)

- Source: https://appshunter.io/ios/app/rustcalc/id1233382845 (this page in markdown: same URL + `.md`)
- Developer: [Roedolf Johannes Nieuwenhuis](https://appshunter.io/developer/1231555866)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 10.0 · 15 MB
- Languages: American English
- Released: 2017-06-14
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/rustcalc/id1233382845/reviews.md

## What is RustCalc?

This application helps sugarcane farmers assess the economic viability of using a chemical to treat the fungal disease, Sugarcane Rust. The farmer selects one of the three chemicals registered for this purpose, then provides basic information such as cost of chemical and the cost of application. The farmer also provides economic information about the crop. The application will calculate a break-even value showing the increase in yield necessary to cover the cost of chemical treatment.


## Version history (last 3 releases)

### 1.2 — 2022-09-02

UI related bug fixes.

### 1.1 — 2022-09-01

UI Improvement.

### 1.0 — 2017-06-14

No release notes.

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## More apps by Roedolf Johannes Nieuwenhuis

- [MyCanesim Lite](https://appshunter.io/ios/app/mycanesim-lite/id1231555867)
- [FertiCalc](https://appshunter.io/ios/app/ferticalc/id1231594109)
- [Biosecurity Africa](https://appshunter.io/ios/app/biosecurity-africa/id1553105553)
- [WeatherWeb RTWD](https://appshunter.io/ios/app/weatherweb-rtwd/id6736560672)

All apps by Roedolf Johannes Nieuwenhuis: https://appshunter.io/developer/1231555866

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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 2026-05-17.*