247+ iOS apps curated and reviewed
If you already know Gear Ratio Calculator 2, this is the deeper bench. 247+ gear ratio calculator 2 apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 1.0★ (1) | No | Yes | Aug 2026 |
| 2 |  | Free | — | Yes | Yes | Jul 2026 |
| 3 |  | $1.99 | 3.0★ (1) | No | No | May 2026 |
| 4 |  | Free | 4.0★ (1) | No | No | May 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | 2.5★ (2) | No | No | May 2026 |
| 7 |  | Free | 2.2★ (5) | No | Yes | Aug 2026 |
| 8 |  | $1.99 was $9.99 | — | No | No | Jul 2026 |
This application helps cyclists optimize their gear settings by calculating and visualizing gear ratios. It generates graphs for speed, cadence, and gear ratios based on various component combinations, aiding in the selection of replacement parts for improved performance.
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.
Calculate and compare bicycle gear ratios to find the optimal gearing for your ride. Input chainring and cog sizes, and see detailed metrics like gear inches, speed, and more. Customize your setup or choose from presets for easy comparison.
This utility app provides calculators for setting up, producing, and checking worm, helical, and spur gears. It can be used for individual calculations or as a complete process flow from start to finish.
Calculate and visualize gear ratios for road bikes and MTBs. Simulate optimal gear combinations with various chainwheels, sprockets, and tires. Helps in selecting replacement parts by displaying speed-cadence graphs and gear ratio charts.
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 tool calculates gear ratios, torque, and speed for gear train systems. It allows users to simulate how these systems work on the fly, aiding in the design of custom gear systems before physical creation. Ideal for DIY enthusiasts and engineers.
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 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.
This utility app simplifies the calculation of final drive ratios for RC cars. It allows for offline calculations and provides insights into how different gear ratios affect acceleration, speed, motor load, and battery life.
Calculate your vehicle's top speed for each gear using transmission ratios, differential gear ratio, and rev limit. Optimize your car's gear ratio for track performance or drag racing, choosing between kmh and mph 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.
Calculate essential mountain bike gearing metrics like gear ratios, gear inches, and gain ratios. This tool helps cyclists understand and optimize their bike's performance.
Optimize your bicycle's gearing with this comprehensive calculator. Analyze gear ratios, calculate speed at cadence, and manage custom configurations. Features include component browsing, sharing options, and helpful articles.