Perform detailed residential heating and cooling load calculations in the field. This app offers extensive data on building materials, weather, and project management for HVAC engineers and technicians.






250+ iOS apps curated and reviewed
If you already know Load Summary, this is the deeper bench. 250+ load summary apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | Yes | Sep 2026 | ||
| 2 | $34.99 | 3.0★ (3) | No | Yes | Jul 2026 | ||
| 3 | $24.99 | 2.8★ (5) | No | Yes | Aug 2026 | ||
| 4 | Free | 4.5★ (10K) | No | Yes | Oct 2026 | ||
| 5 | $6.99 | 3.3★ (3) | No | Yes | Sep 2026 | ||
| 6 | $9.99 | — | No | No | May 2026 | ||
| 7 | Free | — | No | Yes | Sep 2026 | ||
| 8 | Free | — | No | Yes | Aug 2026 |












Perform detailed residential heating and cooling load calculations in the field. This app offers extensive data on building materials, weather, and project management for HVAC engineers and technicians.






Perform detailed heating and cooling load calculations for buildings in the field using your iPhone. Access a vast weather database and construction data to generate comprehensive reports that can be emailed or exported to spreadsheets.