# Roofing Ventilation Calculator — user reviews

> 4 indexed App Store user reviews of Roofing Ventilation Calculator by Compagnie de Saint-Gobain, rated 3.00/5 from 6 ratings.

- Source: https://appshunter.io/ios/app/roofing-ventilation-calculator/id1035643148/reviews
- App overview in markdown: https://appshunter.io/ios/app/roofing-ventilation-calculator/id1035643148.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 2

## Most critical reviews (4 lowest-rated)

### 1/5 — Useless

*2026-04-22, version 2.1.19*

This app only calculates the total attic ventilation requirement based on the 1/300 guideline - which doesn’t require an app to figure out. What the app should do Is calculate the ventilation obtained using specific soffit and ridge vent types, which is what you need.

### 1/5 — A multi-million dollar company and this poor excuse of an app

*2026-01-07*

I can’t help but laugh at this. Seriously?

### 1/5 — Doesn’t work

*2022-06-02, version 2.1.2*

Typical of these kinds of businesses, they never follow through with software tools for contractors. So we have to find other alternatives.

### 1/5 — Roofing calculator

*2020-08-30, version 2.1.2*

The app doe not open on iPhone and does not calculate on iPad. Completely worthless app

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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 2026-06-19.*