# Roofing Ventilation Calculator vs SiteMaster Pro

The clearest difference is rating: SiteMaster Pro at 5.0 against Roofing Ventilation Calculator's 3.0. SiteMaster Pro also leads on update cadence (every 2 months vs every 3 months). Roofing Ventilation Calculator's advantage is ratings volume (6 vs 1) and iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SiteMaster Pro holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Roofing Ventilation Calculator has 6 ratings behind it against 1, so its average is the more settled of the two.

Roofing Ventilation Calculator ships an update every 3 months, SiteMaster Pro every 2 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Roofing Ventilation Calculator | SiteMaster Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/roofing-ventilation-calculator/id1035643148/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sitemaster-pro/id6795274691/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 34 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Saint-Gobain](https://appshunter.io/developer/543924473) | [Master Renovations](https://appshunter.io/developer/1782095062) |

## 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


### SiteMaster Pro

[App page](https://appshunter.io/ios/app/sitemaster-pro/id6795274691)

Manage construction projects from the field with this comprehensive app. Track punch lists, RFIs, change orders, schedules, and daily logs. Access plans and documents, and coordinate deliveries and teams all in one place.

**Highlights:** Punch list tracking, RFI submission and approval, Change order management, Live project scheduling, Daily work logging, Delivery coordination, Plan and document access

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Roofing Ventilation Calculator free?

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

### Is SiteMaster Pro free?

SiteMaster Pro is free to download, with no in-app purchases.

### Which has better reviews, Roofing Ventilation Calculator or SiteMaster Pro?

SiteMaster Pro is rated higher. Roofing Ventilation Calculator averages 3.0 out of 5 from 6 ratings, while SiteMaster Pro averages 5.0 from 1 ratings.

### Do Roofing Ventilation Calculator or SiteMaster Pro have ads?

Neither Roofing Ventilation Calculator nor SiteMaster Pro shows ads.

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

Roofing Ventilation Calculator ships an update every 3 months, and SiteMaster Pro every 2 months. Most recently, Roofing Ventilation Calculator was updated on October 24, 2026 and SiteMaster Pro on October 21, 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.*