250+ iOS apps curated and reviewed
Every iPhone needs a few good digiduct apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (11) | Yes | No | Jul 2026 | |
| 2 |  | Free | — | No | No | Jun 2026 | |
| 3 |  | Free | — | No | No | May 2026 | |
| 4 |  | Free | 5.0★ (2) | No | No | Aug 2026 | |
| 5 |  | $2.99 | 2.0★ (1) | No | No | Jul 2026 | |
| 6 |  | Free | — | Yes | No | May 2026 | |
| 7 |  | $5.99 | — | No | No | Sep 2026 | |
| 8 |  | Free | — | No | No | Aug 2026 |
This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.
