250+ iOS apps curated and reviewed
If you already know Roof Ventilator, this is the deeper bench. 250+ roof ventilator apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (6) | No | Yes | May 2026 | |
| 2 |  | $0.99 | 1.5★ (2) | No | No | Aug 2026 | |
| 3 |  | Free | 3.0★ (6) | No | No | Jun 2026 | |
| 4 |  | Free | 4.5★ (11) | No | No | May 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | — | No | Yes | Aug 2026 | |
| 7 |  | Free | 4.0★ (6) | No | No | May 2026 | |
| 8 |  | Free | 4.3★ (4) | No | No | May 2026 |
This app calculates attic ventilation requirements based on your attic space and intake ventilation net free areas. It helps design ventilation systems to meet building code limits, suggesting vent quantities and types for optimal function. It also allows you to check existing systems and plan modifications.
Calculate roof and rafter lengths, plumb and foot cut angles, and roof areas. Supports both metric and imperial measurements for various roofing projects.
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.
