Calculate weight and balance for various Piper PA28 aircraft models. Features real-time CG plotting, flight envelope visualization, and warning alerts for out-of-limits conditions. Save aircraft data and generate professional PDF loadsheets.






8+ iOS apps curated and reviewed
Out of 8+ 2016 pa-40 apps on iOS, 2 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $2.99 | 5.0★ (4) | No | No | Jul 2026 | ||
| 2 | $2.99 | 5.0★ (1) | No | No | Jul 2026 | ||
| 3 | $2.99 | — | No | No | Jul 2026 | ||
| 4 | Free | 4.8★ (5) | No | No | May 2026 | ||
| 5 | Free | 4.3★ (3) | No | No | Aug 2026 |






Calculate weight and balance for various Piper PA28 aircraft models. Features real-time CG plotting, flight envelope visualization, and warning alerts for out-of-limits conditions. Save aircraft data and generate professional PDF loadsheets.






Calculate weight and balance for Piper PA34 Seneca aircraft models. Features interactive weight input, real-time CG plotting, and warning alerts for out-of-envelope conditions. Generate professional PDF loadsheets for easy sharing and printing.





