249+ iOS apps curated and reviewed
Looking for free propeller slip ratio calculato apps? 18 of our 249+ 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 | — | No | No | Oct 2026 | |
| 2 |  | Free | 3.0★ (1) | No | No | May 2026 | |
| 3 |  | Free | — | No | No | Aug 2026 | |
| 4 |  | Free | — | No | Yes | May 2026 | |
| 5 |  | Free | 2.5★ (2) | No | No | Oct 2026 | |
| 6 |  | Free | 1.0★ (1) | No | Yes | Sep 2026 | |
| 7 |  | Free | 4.0★ (1) | No | No | May 2026 | |
| 8 |  | Free | — | No | No | May 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.
