# Roofing Ventilation Calculator vs RoofPair

The clearest difference is review sentiment: RoofPair at 50% against Roofing Ventilation Calculator's 0%. RoofPair also leads on rating (4.4 vs 3.0) and update cadence (monthly vs every 3 months). Roofing Ventilation Calculator's advantage is in-app purchases (none vs 11) and device support (3 vs 1). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. RoofPair sells 11 in-app purchases, starting at $35.00 per month. Roofing Ventilation Calculator asks for nothing beyond the download.

RoofPair holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 6 and 7 respectively. Written reviews point the same way: 0% of Roofing Ventilation Calculator's written reviews are positive against 50% of RoofPair's.

Roofing Ventilation Calculator ships an update every 3 months, RoofPair monthly. Both last shipped on October 3, 2026.

## The numbers

| Metric | Roofing Ventilation Calculator | RoofPair |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/roofing-ventilation-calculator/id1035643148/reviews) | **[4.4 (7 ratings)](https://appshunter.io/ios/app/roofpair/id6741769273/reviews)** |
| Number of ratings | 6 | **7** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 34 MB | 72 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Compagnie de Saint-Gobain](https://appshunter.io/developer/543924473) | [Roof Pair Developments LLC](https://appshunter.io/developer/1876911189) |

## What reviewers say

### Roofing Ventilation Calculator

[App page](https://appshunter.io/ios/app/roofing-ventilation-calculator/id1035643148)

Calculate the necessary amount of ventilation products for an attic space. Input attic dimensions or square footage to receive results based on the NFA 1/300 rule for balanced ventilation.

**Highlights:** Attic dimension input, Square footage input, NFA 1/300 rule calculation, Ventilation product quantity determination, Balanced ventilation planning

**Features:** macOS Compatibility

**In-app purchases:** none


### RoofPair

[App page](https://appshunter.io/ios/app/roofpair/id6741769273)

Instantly identify and compare roofing shingles using photos and measurements. Access detailed product data, visualize options on a roof, and find code-compliant alternatives quickly. Streamline roofing decisions for professionals.

**Highlights:** Photo-based shingle identification, Shingle visualizer, Comprehensive product database, Smart matching engine, Real-time comparisons, Technical documentation access

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoofPair Basic - 1 Month | $35.00 | per month |
| RoofPair Pro - 1 Month | $75.00 | per month |
| RoofPair Pro - 1 Month | $324.99 | per month |
| RoofPair Pro - 1 Month | $350.00 | per month |
| RoofPair Pro - 1 Month | $374.99 | per month |
| RoofPair Pro - 1 Month | $379.99 | per month |
| RoofPair Basic - 1 Year | $399.00 | per year |
| RoofPair Pro - 1 Month | $400.00 | per month |
| RoofPair Pro - 1 Month | $450.00 | per month |
| RoofPair Pro - 1 Month | $474.99 | per month |
| RoofPair Pro - 1 Month | $500.00 | per month |


## Frequently asked questions

### Is Roofing Ventilation Calculator free?

Roofing Ventilation Calculator is free to download, with no in-app purchases.

### Is RoofPair free?

RoofPair is free to download, with in-app purchases available.

### Which has better reviews, Roofing Ventilation Calculator or RoofPair?

RoofPair is rated higher. Roofing Ventilation Calculator averages 3.0 out of 5 from 6 ratings, while RoofPair averages 4.4 from 7 ratings.

### Do Roofing Ventilation Calculator or RoofPair have ads?

Neither Roofing Ventilation Calculator nor RoofPair shows ads.

### Which is updated more often, Roofing Ventilation Calculator or RoofPair?

Roofing Ventilation Calculator ships an update every 3 months, and RoofPair monthly. Most recently, Roofing Ventilation Calculator was updated on October 3, 2026 and RoofPair on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*