250+ iOS apps curated and reviewed
Airflow CFM Calc HVAC is the household name in airflow cfm calc hvac, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $0.99 | — | Yes | Yes | Jun 2026 | |
| 2 |  | Free | 4.6★ (33) | No | Yes | Oct 2026 | |
| 3 |  | Free | 5.0★ (1) | No | Yes | Sep 2026 | |
| 4 |  | Free | — | No | Yes | Aug 2026 | |
| 5 |  | Free | — | No | Yes | May 2026 | |
| 6 |  | $9.99 | — | No | No | May 2026 | |
| 7 |  | Free | 4.2★ (185) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | Yes | 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.
This professional tool offers 18 HVAC calculators for field use, including BTU, CFM, duct sizing, and psychrometrics. It saves calculation history, job records, and allows PDF export of worksheets. The app works offline and features a high-contrast interface for job sites.
