248+ iOS apps curated and reviewed
Finding the right gear calculator plus apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | May 2026 | |
| 2 |  | $2.99 | 3.6★ (5) | No | No | Sep 2026 | |
| 3 |  | Free | 4.7★ (61K) | No | No | Sep 2026 | |
| 4 |  | $0.99 | 4.8★ (4.3K) | No | Yes | Sep 2026 | |
| 5 |  | Free | 3.7★ (3) | No | No | May 2026 | |
| 6 |  | Free | — | Yes | Yes | Jul 2026 | |
| 7 |  | Free | — | No | No | May 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 a car's theoretical speed in any gear based on engine RPM, transmission, differential ratios, and tire size. It can also determine travel distance per engine revolution and estimate top speed for each gear. Supports both metric and imperial units.
This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.
