Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.




215+ iOS apps curated and reviewed
Ductulator is the household name in duct hero reviews, but it's far from the only option. We track 215+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $3.99 | 4.7★ (317) | No | No | Sep 2026 | ||
| 2 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 3 | $4.99 was $5.99 | 3.1★ (9) | No | Yes | Sep 2026 | ||
| 4 | Free | 4.6★ (36K) | No | No | Sep 2026 | ||
| 5 | Free | 4.1★ (29K) | No | No | Sep 2026 | ||
| 6 | Free | 4.7★ (34K) | No | No | Sep 2026 | ||
| 7 | Free | 4.7★ (19K) | No | No | Sep 2026 | ||
| 8 | Free | 4.6★ (53K) | Yes | No | Sep 2026 |




Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.






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.






This app provides quick and simple HVAC duct sizing analysis. It allows users to calculate duct dimensions based on airflow or existing dimensions, and can also determine a range of duct sizes. Results can be emailed for further analysis.