248+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our track gear calculator list covers 248+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $0.99 | 4.1★ (11) | No | No | Jul 2026 |
| 2 |  | Free | 3.7★ (3) | No | No | May 2026 |
| 3 |  | Free | 4.7★ (61K) | No | No | Aug 2026 |
| 4 |  | $0.99 | — | No | No | Aug 2026 |
| 5 |  | $2.99 | 3.6★ (5) | No | No | Aug 2026 |
| 6 |  | $0.99 | 4.8★ (4.3K) | No | Yes | Aug 2026 |
| 7 |  | Free | 3.5★ (6) | No | Yes | May 2026 |
| 8 |  | $3.99 | 4.3★ (11) | No | No | Aug 2026 |
This app helps track cyclists calculate gear ratios and speeds. It supports a wide range of chainring and cog sizes, and can determine optimal gear changes. Results can be displayed in Imperial or Metric units.
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 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 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 a versatile calculator experience with both standard and scientific modes. Customize its appearance, use it in any orientation, and access additional tools like a notes tab and calculation history. It's designed for students and professionals needing accurate calculations.
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.
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.
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.
Perform calculations quickly and accurately with large buttons. Personalize the interface by selecting custom background and text colors. This straightforward utility is designed for intuitive use.
This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.
This tool assists watchmakers in diagnosing issues within watch gear trains. By inputting tooth counts and movement details, it calculates turn times, tooth passage, and other metrics to pinpoint the source of amplitude irregularities shown on a TimeGrapher trace.
Calculate BMX gear ratios and compare different gear combinations with an interactive chart. This app works offline and includes a comprehensive list of popular tire sizes for accurate roll-out calculations.
A straightforward calculator app designed for simplicity, offering basic arithmetic operations and percentage calculations. It allows users to record and recall past results, customize colors, and enable touch sounds for a personalized experience.
This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.
Easily calculate horizontal and vertical dimensions for diagonal railroad model track layouts. Input track length and angle to get precise measurements for combining different track pieces. Avoid guesswork and ensure accurate model railway construction.