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 | May 2026 | |
| 2 |  | Free | 3.7★ (3) | No | No | May 2026 | |
| 3 |  | Free | 4.4★ (24) | No | Yes | Sep 2026 | |
| 4 |  | Free | — | Yes | No | Aug 2026 | |
| 5 |  | Free | 3.5★ (6) | No | Yes | May 2026 | |
| 6 |  | $3.99 | 4.3★ (11) | No | No | Aug 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | Free | 4.7★ (61K) | No | No | Sep 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.
This app offers a suite of specialized calculators for RC car enthusiasts. It helps with gear ratios, suspension geometry, corner weights, oil viscosity, fuel usage, and top speed estimations. It also stores data for multiple cars and includes helpful guides.
