This app helps kart racers calculate optimal gearing ratios for different tracks and conditions. It provides a quick and easy way to determine the best setup for improved performance on the track.
Kart Gear Ratios by James Janelle




246+ iOS apps & games curated and reviewed
Kart Gear Ratios is the household name in kart gear ratios, but it's far from the only option. We track 246+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | $1.99 | 1.0★ (1) | No | No | Jul 2026 | ||
| 3 | $1.99 | 3.0★ (1) | No | No | Oct 2026 | ||
| 4 | Free | 2.5★ (2) | No | No | Oct 2026 | ||
| 5 | Free | 1.0★ (1) | No | Yes | Sep 2026 | ||
| 6 | Free | 2.0★ (6) | No | Yes | Nov 2026 | ||
| 7 | $0.99 | — | No | No | Nov 2026 | ||
| 8 | Free | 4.0★ (1.5K) | No | No | Oct 2026 |










This app helps kart racers calculate optimal gearing ratios for different tracks and conditions. It provides a quick and easy way to determine the best setup for improved performance on the track.





Calculate gear ratio, driveline ratio, and vehicle speed for various vehicles. Supports US and Metric units, with multiple input methods for tire size. Saves calculations for quick reference and allows emailing results.