203+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our gear ratio calculator lite list covers 203+ iPhone apps updated through May 2026. Compare ratings, prices, and screenshots in one place.
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 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 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 gear calculator for cyclists helps optimize bicycle gearing, calculate speed at a given cadence, and manage gear configurations in one place. With various tools and features, cyclists can make informed decisions about their gearing, compare options, and plan their rides more effectively.
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!
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.
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 mobile application provides a collection of off-road calculators for 4x4 enthusiasts, helping them determine ideal gear ratios and more. It brings popular calculators together in a convenient phone app, and users can provide feedback on the app's functionality and suggest future improvements.
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.
Quickly crunch numbers with our user-friendly iPad calculator app that offers basic and scientific functions. Download now for accurate calculations on the go!
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.
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!
A comprehensive all-in-one calculator app with features like scientific calculator, unit converter, currency converter, percentage calculator, and more for everyday use. It provides a wide range of calculation tools from basic arithmetic to complex conversions and financial calculations. Try it out now for convenient and efficient calculations!
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.
A top-rated scientific calculator app on iOS devices offering advanced math functions with a user-friendly interface for users of all levels. Features include step-by-step solutions, math photo solving, and handwriting recognition. Enhance your calculations with this versatile tool.
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.
This gear ratio speed calculator helps you determine the speed of your car for a specific gear at a given engine RPM, using transmission and differential gear ratios, and tire size. Calculate theoretical speed, travel distance, and top speed for each gear, and choose between metric or Imperial units.