249+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our air duct calculator list covers 249+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (7) | No | Yes | Aug 2026 |
| 2 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 3 |  | $3.99 | 4.7★ (317) | No | No | Aug 2026 |
| 4 |  | Free | — | No | Yes | Jul 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | — | No | No | Jun 2026 |
| 7 |  | Free | — | No | Yes | Jun 2026 |
| 8 |  | Free | 2.0★ (1) | 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.
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.
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 utility app helps HVAC engineers quickly calculate the recommended Thermaflex duct size for installations. Input project volume and friction loss to determine the optimal duct size based on established industry standards.
This app allows HVAC professionals to quickly and accurately size new ducts or calculate the performance of existing ones. It supports both round and rectangular ductwork, offering precise calculations through direct entry or intuitive sliders. The tool provides live updates and outputs key performance metrics.
This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.
This app offers a suite of tools to optimize compressed air stations. It includes unit conversion, pressure drop calculation, condensate development, and receiver sizing. It also helps determine sound pressure levels and leakage quantities.
This tool assists HVAC professionals and students with quick and precise calculations for duct sizing, airflow velocity, and airflow rate. It works offline and features a user-friendly interface for efficient project work.
This utility app helps HVAC professionals and enthusiasts quickly calculate essential airflow metrics for various duct sizes. It provides CFM, FPM, and FL values, simplifying HVAC system design and analysis.