This utility app calculates the travel distance of an RC direct drive car per motor rotation. It simplifies setup by displaying results in three easy-to-read tables, allowing users to select gear teeth and tire diameter.




249+ iOS apps curated and reviewed
Looking for free rc rollout calculator apps? 17 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | |
| 2 | Free | 4.9★ (7) | Yes | No | Aug 2026 | |
| 3 | Free | 5.0★ (1) | Yes | No | May 2026 | |
| 4 | Free | 4.4★ (23) | No | Yes | Aug 2026 | |
| 5 | $0.99 | 3.8★ (120) | No | No | Aug 2026 | |
| 6 | Free | 4.9★ (23) | No | No | Aug 2026 | |
| 7 | Free | 4.7★ (61K) | No | No | Aug 2026 | |
| 8 | Free | 4.5★ (15) | No | No | Aug 2026 |





This utility app calculates the travel distance of an RC direct drive car per motor rotation. It simplifies setup by displaying results in three easy-to-read tables, allowing users to select gear teeth and tire diameter.



Calculate the exponential distance traveled by RC car motors based on tire diameter. This tool helps optimize gear ratios for acceleration, speed, and motor/battery load.


This app offers a suite of specialized calculators for RC car enthusiasts. It helps with gear ratios, suspension geometry, corner weights, oil viscosity, fuel usage, and top speed estimations. It also stores data for multiple cars and includes helpful guides.


This app is a powerful tool for RC car enthusiasts to calculate maximum speed and optimize gearing. It allows users to save setups, add notes, and email records for detailed tracking of performance. Supports a wide range of LiPo batteries and provides multiple calculation metrics.


Estimate your RC car's top speed by inputting details about its gearing, motor, and batteries. Record your estimates and actual speeds to compare different setups.


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.


Easily calculate suspension geometry for RC cars using pill inserts. This tool helps you understand the exact setup you'll achieve with different insert arrangements, simplifying complex adjustments for a better driving experience.




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 helps radio control car racers calculate their final drive ratio and rollout. Easily select your car, input gear sizes, and get instant results. It also offers charts and saves favorite cars for quick access.


This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.


This app offers a straightforward calculator with a large display and oversized buttons for easy operation. It's designed for everyday tasks, enabling users to perform fundamental arithmetic like addition, subtraction, multiplication, and division with clarity and convenience.


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.


A free, classic calculator app with large, easy-to-press buttons and customizable skins. It supports basic arithmetic, memory functions, and can handle very large numbers without using scientific notation. Multitasking is also supported on compatible devices.


This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.


This app offers a comprehensive suite of 15 calculators for everyday and scientific needs. Easily perform basic arithmetic, complex scientific functions, and specialized calculations like sales tax, age, and loan payments. It also includes a robust unit converter for various measurements.




This app offers a comprehensive scientific calculator with advanced functions for math, finance, and engineering. It includes unit and currency conversion, a constants library, and a biorhythm calculator for daily insights. The interface is intuitive and supports multiple calculation modes.