250+ iOS apps curated and reviewed
The best free rafter calculator apps on iPhone average 4.6★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 | |
| 2 |  | Free | 3.7★ (6) | No | Yes | Aug 2026 | |
| 3 |  | Free | 4.7★ (850) | No | Yes | Sep 2026 | |
| 4 |  | Free | — | No | Yes | Aug 2026 | |
| 5 |  | Free | 5.0★ (1) | No | Yes | Aug 2026 | |
| 6 |  | Free | — | No | No | May 2026 | |
| 7 |  | Free | — | No | No | Jul 2026 | |
| 8 |  | Free | 5.0★ (4) | No | No | Sep 2026 |
This tool quickly calculates rafter lengths based on rise and run. It supports conversions between imperial and metric units in real-time, offering results in meters, centimeters, inches, and feet.
This app is a 3D roof builder and rafter calculator for contractors and DIYers. It automatically generates professional blueprints with labeled parts, cut lists, and material estimates. Design complex roof systems in interactive 3D and export plans for the job site.
