98+ iOS apps curated and reviewed
Looking for free manual j apps? 17 of our 98+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (41) | No | Yes | Oct 2026 | |
| 2 |  | Free | — | No | Yes | Oct 2026 | |
| 3 |  | Free | 5.0★ (1) | No | Yes | Oct 2026 | |
| 4 |  | Free | 4.0★ (1) | No | Yes | Jun 2026 | |
| 5 |  | $34.99 | 3.0★ (3) | No | Yes | Jul 2026 | |
| 6 |  | Free | — | No | No | May 2026 | |
| 7 |  | Free | 5.0★ (1) | No | Yes | Sep 2026 | |
| 8 |  | Free | 3.4★ (5) | No | Yes | Sep 2026 |
This app provides professional HVAC load calculations for contractors, offering three levels of accuracy from quick estimates to detailed Manual J calculations. It's designed for field use with an intuitive interface, offline capabilities, and professional report generation.
This app transforms your iPhone or iPad Pro into a comprehensive HVAC design toolkit. It allows for on-site room scanning with LiDAR, calculation of heating and cooling loads, duct and equipment sizing, and generation of professional PDF reports.
