90+ iOS apps curated and reviewed
Looking for free manual j apps? 17 of our 90+ 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★ (43) | No | Yes | Oct 2026 | |
| 2 |  | Free | 5.0★ (1) | No | Yes | Oct 2026 | |
| 3 |  | Free | 5.0★ (1) | No | Yes | Oct 2026 | |
| 4 |  | $34.99 | 3.0★ (3) | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.0★ (1) | No | Yes | Jun 2026 | |
| 6 |  | Free | 5.0★ (1) | No | Yes | Oct 2026 | |
| 7 |  | Free | 3.4★ (5) | No | Yes | Sep 2026 | |
| 8 |  | Free | — | No | No | May 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.
Estimate a home's heating and cooling loads with a simplified block calculation. Input house details like area, insulation, and windows to see load breakdowns and check equipment against your quotes. Save, sync, and share detailed reports via PDF.
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.
