247+ iOS apps curated and reviewed
Whether you're new to gas ventilation calculator uk or looking for an upgrade, our curated collection of 247+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $4.99 | — | No | No | Sep 2026 | |
| 2 |  | $3.99 | — | No | No | Aug 2026 | |
| 3 |  | Free | 3.0★ (6) | No | No | Jun 2026 | |
| 4 |  | Free | 5.0★ (47) | No | No | Oct 2026 | |
| 5 |  | Free | — | No | Yes | Jun 2026 | |
| 6 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 7 |  | Free | 4.6★ (33) | No | Yes | Oct 2026 | |
| 8 |  | Free | 3.0★ (2) | No | Yes | Oct 2026 |
Calculate required ventilation sizes for various domestic gas appliances up to 70kW. Supports flueless, open flue, and room-sealed appliances, including multiple rooms and appliances. Also features an extractor fan and vent size calculator.
Calculate ventilation requirements for gas appliances, including open flued, room sealed, and flueless types. Determine free air area for existing and new vents to ensure suitability for appliances. Simplifies complex calculations by reading appliance data directly.
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.
