249+ iOS apps curated and reviewed
With an average user rating of 4.3★, the air duct size calculator category is one of the App Store's strongest. Browse all 249+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | Yes | Sep 2026 | |
| 2 |  | Free | 4.6★ (33) | No | Yes | Oct 2026 | |
| 3 |  | Free | — | No | Yes | Oct 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | $3.99 | — | No | No | Sep 2026 | |
| 6 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 7 |  | Free | — | No | No | Aug 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.
