248+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our propeller calc list covers 248+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 3.0★ (1) | No | No | May 2026 | |
| 2 |  | Free | 3.0★ (10) | No | No | Nov 2026 | |
| 3 |  | $4.99 | 3.5★ (12) | No | No | Nov 2026 | |
| 4 |  | Free | — | No | Yes | Oct 2026 | |
| 5 |  | Free | 4.8★ (469) | Yes | No | Oct 2026 | |
| 6 |  | $1.99 | 4.8★ (27) | No | No | Oct 2026 | |
| 7 |  | Free | — | No | No | Oct 2026 | |
| 8 |  | Free | — | No | No | Oct 2026 |
This utility calculates propeller performance metrics like pitch, gear ratio, RPM, slip, and speed. Input any four values, and the app computes the fifth, helping users understand the relationship between propeller design and boat performance.
This tool helps metal fabricators calculate the necessary tonnage for air bending parts on press brakes. It guides users through selecting material type, thickness, and die opening to determine tonnage, minimum flange length, and inside bend radius.
This app simplifies complex aviation calculations for pilots, including duty time, performance metrics, and landing data. It consolidates numerous aviation tools into a single, easy-to-use application for professional pilots.
