iForester vs Dairy Ventilation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iForester
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An app for tree inventory and tree diameter and DBH measurement
Dairy Ventilation
This tool helps dairy producers make informed decisions about managing heat stress and mechanical ventilation in barns. It calculates key metrics like the Temperature-Humidity Index and fan efficiency, aiding in system design and upgrades.
- 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
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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.
Screenshots
Verdict
The clearest difference is update cadence: Dairy Ventilation at every 2 weeks against iForester's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iForester ships an update every 2 months, Dairy Ventilation every 2 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | iForester | Dairy Ventilation |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 143 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Purdue Research Foundation (Apps) | University of Wisconsin-Madison Shared Apps |
In-app purchases
iForester
No in-app purchases
Dairy Ventilation
No in-app purchases
Questions
Is iForester free?
Is Dairy Ventilation free?
Do iForester or Dairy Ventilation have ads?
Which is updated more often, iForester or Dairy Ventilation?
Other comparisons
