# Dairy Ventilation

> Dairy barn ventilation and heat stress management decision support tool. (iPhone/iPad app by University of Wisconsin-Madison Shared Apps.)

- Source: https://appshunter.io/ios/app/dairy-ventilation/id6767579932 (this page in markdown: same URL + `.md`)
- Developer: [University of Wisconsin-Madison Shared Apps](https://appshunter.io/developer/908478605)
- Category: Productivity
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 27 MB
- Languages: English
- Released: 2026-05-21
- Data updated: 2026-06-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dairy-ventilation/id6767579932/reviews.md

## What is Dairy Ventilation?

Welcome to the Dairy Ventilation Calculator- a free UW-Madison Extension tool for dairy producers to support decisions about heat stress management and mechanical ventilation in dairy barns.

FEATURES
- THI (Temperature-Humidity Index) with location-based weather
- Adopting Fans calculator — size and select fans for your barn
- Evaluating Ventilation calculator — assess existing ventilation performance
- Fan Efficiency comparison chart — compare fan models side by side
- Payback Period analysis — estimate return on investment for upgrades

WHO IT'S FOR
- Dairy producers managing heat stress in cow housing
- Farm managers planning fan upgrades or new ventilation systems
- Extension educators and dairy consultants

ABOUT
Developed by Nesli Akdeniz in Biological Systems Engineering at UW-Madison as an educational and decision-support tool for dairy producers. Calculations follow established methods used in dairy ventilation design. Results are intended to give general guidance. Final decisions and outcomes remain the responsibility of the user.

## Key features

- Temperature-Humidity Index (THI) calculation with location-based weather
- Fan sizing and selection for barns
- Assessment of existing ventilation performance
- Fan efficiency comparison
- Payback period analysis for upgrades


## Frequently asked questions about Dairy Ventilation

### What is Dairy Ventilation?

Dairy Ventilation is a free tool developed by UW-Madison Extension to assist dairy producers in making decisions about heat stress management and mechanical ventilation in their barns. It provides calculations for THI, fan sizing, and ventilation performance.

### Is Dairy Ventilation available on Android?

Based on the provided data, Dairy Ventilation is available on iPhone, iPad, and iPod. Information regarding Android compatibility is not specified.

### How often is Dairy Ventilation updated?

The latest version of Dairy Ventilation is 1.0.5, last updated on June 16, 2026. This indicates recent development activity, though specific update frequency is not detailed.

### What are the key features of Dairy Ventilation?

Key features include calculating the Temperature-Humidity Index (THI) with location-based weather, sizing and selecting fans, evaluating ventilation performance, comparing fan efficiency, and estimating the payback period for upgrades.

### Does Dairy Ventilation have ads?

No, Dairy Ventilation does not contain advertisements. It is a free educational and decision-support tool.

### What is the age rating for Dairy Ventilation?

Dairy Ventilation has an age rating of 4+, making it suitable for a wide audience. The app's content is considered appropriate for young children and older users.

### Can Dairy Ventilation be used offline?

The description mentions location-based weather for THI calculations, suggesting an internet connection may be required for some features. However, core calculation functionalities might be available offline.

### Who developed Dairy Ventilation?

Dairy Ventilation was developed by Nesli Akdeniz in Biological Systems Engineering at the University of Wisconsin-Madison as an educational and decision-support tool.

## Version history (last 3 releases)

### 1.0.5 — 2026-06-16

Corrected the Temperature-Humidity Index (THI) calculation for improved accuracy

### 1.0.4 — 2026-05-26

This update includes several improvements:
• Reference citations are now tappable and linked directly to the sources
• Calculation results now appear in an easy-to-read pop-up summary table
• Added dollar sign to fan cost results
• Minor interface refinements

### 1.0 — 2026-05-21

No release notes.

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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 2026-06-25.*