205+ iOS apps curated and reviewed
If you already know Gear Ratio Calculator 2, this is the deeper bench. 205+ gear ratio calculator 2 apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.
This application helps cyclists optimize their gear settings by simulating speed-cadence and gear ratio graphs for various chainwheel, sprocket, and tire combinations. It allows users to find the ideal gear ratio for their desired speed range and select replacement parts to achieve a smoother ride.
This digital toolbox helps simplify driveline setup and predict performance by calculating gear ratios, tire size, and vehicle speed variables. Download the app to plan your rig and explore how different combinations impact your vehicle's performance.
This application allows users to quickly and easily calculate gear ratios, torque, and speed of gear train systems, and simulate how they work. It's a useful tool for DIYers and engineers to design and preview gear systems before building them, and can help with calculations for mechanical advantage and gear ratios.
This bicycle gear calculator helps you find the optimal gearing for your bicycle and compare multiple gearings with each other, displaying key metrics such as gear ratio, speed, and gear inches. Try it out and optimize your ride by comparing different gearing systems to find the one that suits you best.
This application offers a comprehensive set of calculators for RC car enthusiasts, covering gear ratios, suspension geometry, corner weights, oil viscosity, fuel usage, top speed, and oil blending. With this tool, users can easily make informed adjustments to their vehicles and optimize performance, sign up now and take your RC car bashing and racing to the next level!
Quickly crunch numbers with our user-friendly iPad calculator app that offers basic and scientific functions. Download now for accurate calculations on the go!
Calculator! is a versatile calculator app for iPad and iPhone with standard and scientific functions. Customize the look, take notes, view history, and perform complex calculations with ease. Perfect for math students and professionals.
A versatile scientific calculator app designed for math enthusiasts, offering features like natural display for textbook-like equations, symbolic and numeric modes, complex number calculations, calculus functions, statistical analysis, and unit conversion. With a premium upgrade option for additional advanced features and customization. Access the power of NCalc FX now!
PCalc Lite is the ideal calculator app for scientists, engineers, students, and programmers offering RPN mode, multi-line display, unit conversions, constants, and more. Try it for free on your iPad and upgrade for additional features or themes. Also available on Apple Watch for on-the-go calculations.
This application calculates gear ratios for road bikes and MTBs, allowing users to simulate optimal gear combinations and create graphs of gear ratios and speed-cadence. It helps users choose suitable replacement parts by displaying gear ratios, speed, and cadence in various charts, enabling them to find the perfect match for their desired speed range.
This application helps you calculate the final drive ratio of your RC car using a simple formula, making it easy to determine the optimal gear setting for your vehicle. By inputting a few numbers, you can find the perfect balance between acceleration, speed, and battery life, and optimize your RC car's performance.
This application calculates key parameters of spur gears and pinions, including outside diameter, centre distance, and ratio, based on gear system and tooth count. Try it out to easily determine essential specifications for your spur gear and pinion designs.
A handy math assistant for solving basic and scientific calculations intuitively and quickly. Become a math master with this free app!
This calculator helps you find the correct fusion pressure for HDPE and Polypropylene pipe fusion jobs by selecting your fusion machine and entering pipe size and pressure requirements. Try it now to take the guesswork out of pipe fusion and get the recommended theoretical gauge pressure for your project.
This application helps users design and simulate planetary gear systems, calculating gear teeth and speed, and is ideal for DIYers who want to quickly and easily create their own systems before 3D printing. Try it out to preview and test your planetary gear system designs on the fly.
Estimate the amount of gravel, stone, sand, and more for your projects with this free gravel calculator. Get accurate measurements in tons, cubic yards, and cubic meters. Trusted by millions worldwide, it's your go-to tool for landscaping and hardscaping projects!
A versatile graphing calculator app with advanced scientific functions, graphing capabilities, unit conversion, constants, table generation, educational resources, and statistical tools. Perfect for students and professionals in math and science fields. Discover a world of mathematical possibilities in one convenient tool.
This application is a quick and easy tool for radio control car racers to calculate their final drive ratio and rollout, allowing them to determine if their car is geared correctly. It enables users to select their car, pinion and spur size, and calculate ratios, with features to save favourite cars, choose measurement units, and access ratio charts.