250+ iOS apps curated and reviewed
Looking for free gear calculator pro apps? 16 of our 250+ 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 | 5.0★ (1) | No | Yes | Oct 2026 | |
| 2 |  | Free | 3.7★ (3) | No | No | Oct 2026 | |
| 3 |  | Free | — | Yes | No | Aug 2026 | |
| 4 |  | Free | 4.4★ (25) | No | Yes | Oct 2026 | |
| 5 |  | $3.99 | 4.3★ (12) | No | No | Oct 2026 | |
| 6 |  | Free | — | No | No | May 2026 | |
| 7 |  | Free | 4.7★ (61K) | No | No | Oct 2026 | |
| 8 |  | Free | — | No | No | May 2026 |
This professional mechanical design tool helps engineers and enthusiasts calculate and optimize various gear parameters. It offers accurate calculations for different gear types, custom parameter input, and real-time design previews.
Calculate essential dimensions for spur gears and pinions using diametral pitch or module. This tool provides outside diameter, center distance, and ratio for specific gear types.
