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.




0+ iOS apps curated and reviewed
If you already know Ductulator, this is the deeper bench. 0+ ductulator alternative apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $3.99 | 4.7★ (317) | No | No | Sep 2026 | ||
| 2 | $3.99 | 4.8★ (6) | No | No | Aug 2026 | ||
| 3 | $0.99 | 5.0★ (1) | No | No | Aug 2026 | ||
| 4 | $3.99 | 3.9★ (9) | No | No | Sep 2026 | ||
| 5 | Free | 1.9★ (20) | No | Yes | May 2026 | ||
| 6 | Free | 5.0★ (1) | No | No | May 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | 4.7★ (4.3K) | No | Yes | Oct 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 app calculates the correct dimensions for sheet metal ductwork. It simplifies the process of determining airflow and pressure drop for HVAC systems. Essential for professionals in the sheet metal and HVAC industries.





This utility app assists HVAC design professionals in calculating duct sizes. It goes beyond basic calculations to provide a list of suitable duct sizes based on design criteria, offering an intuitive interface for precise adjustments.