200+ iOS apps curated and reviewed
With an average user rating of 4.0★, the duct sizer category is one of the App Store's strongest. Browse all 200+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | Oct 2026 | |
| 2 |  | Free | 4.5★ (35) | No | Yes | Oct 2026 | |
| 3 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 4 |  | $4.99 | 3.1★ (9) | No | Yes | Oct 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | $4.99 | — | No | No | Oct 2026 | |
| 7 |  | Free | 1.9★ (20) | No | Yes | May 2026 | |
| 8 |  | $5.99 | — | No | No | Sep 2026 |
This tool quickly calculates HVAC duct sizes based on airflow and friction loss. It supports various duct shapes and provides key airflow values for field use.
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.
This tool simplifies HVAC duct sizing for professionals. It quickly calculates dimensions for rectangular, round, and oval ducts based on airflow, friction loss, and velocity, ensuring optimal ventilation system performance.
