# RC Pit Calc Pro — Gear Ratio & Setup Calculator > Specialized calculators for RC car racing and bashing. (iPhone/iPad app by Degree3, Inc..) - Source: https://appshunter.io/ios/app/rc-pit-calc-pro/id1562268871 (this page in markdown: same URL + `.md`) - Developer: [Degree3, Inc.](https://appshunter.io/developer/1497876563) - Category: Utilities, Sports - Price: Free with in-app purchases - Rating: 4.40/5 from 23 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 56 MB - Languages: American English, Czech, Dutch, French (France), German (Germany), Italian, Japanese, European Portuguese, Chinese (Simplified, China), European Spanish and 3 more - Released: 2021-06-23 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/rc-pit-calc-pro/id1562268871/reviews.md ## What is RC Pit Calc Pro? The RC gear ratio calculator trusted by racers and bashers — plus every other calculator you need at the track, in one free app. GEAR RATIO CALCULATOR Calculate gear ratio, final drive ratio (FDR), and rollout from your pinion and spur. Enter your gears "before and after" to see the real impact of gear and tire changes as a percentage (e.g. +2.5%), so you know exactly how much speed and motor load to expect. Built-in transmission data for hundreds of popular RC cars. TOP SPEED CALCULATOR For electric cars with brushless motors: enter basic info about your setup and get a solid estimate of your car's top speed. PILL INSERT / SUSPENSION GEOMETRY CALCULATOR Find your toe, anti-squat, kick-up, roll center, and track width. Supports all popular cars that use pill inserts, and works with custom suspension mounts. CORNER WEIGHT CALCULATOR Enter your car's corner weights and get the full breakdown: front-rear, left-right, and cross weight/wedge. SHOCK OIL TEMP & VISCOSITY CALCULATOR Racing on a hotter or colder day than usual? See exactly what shock oil to run to keep the same car feel. OIL BLENDING CALCULATOR Don't have the right shock oil with you? Blend the thick and thin oils you already own — this calculator gives you the exact proportions for your target viscosity. FUEL USAGE CALCULATOR For nitro racers: fuel burn per minute in race conditions, how much you need to finish long mains, and how many pit stops to plan. FEATURES - Remembers your entries for each car - Built-in data (spur gear, transmission ratio) for hundreds of popular cars - Walkthroughs and detailed help for every calculator FROM SO DIALED Want tuning help beyond the math? Our RC Setup App gives you pro setup sheets for 600+ cars, race logging, and an AI mechanic — find "RC Setup App" on the App Store. ## Key features - Gear ratio calculation - Suspension geometry analysis - Corner weight balancing - Shock oil viscosity adjustment - Fuel usage and pit stop planning - Top speed estimation - Oil blending for custom viscosity ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime backer | $2.00 | one-time | | Lifetime Backer | $4.99 | one-time | | Lifetime Backer | $4.00 | one-time | ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/rc-pit-calc-pro/id1562268871/reviews.md ### 1/5 — Can’t scroll *2025-10-12* Spur and pinion chart is glitched after new update. ### 1/5 — Completely in accurate *2025-08-31* I put in my gearing, kv, battery, ect. Gives me a top speed of 4. The car I can promise does well over 100. App is fake in my experience. ### 4/5 — Very useful *2023-12-24* A useful app, I find the pill insert reference quite easy to use and the info regarding my brand of car seems to be correct. ### 1/5 — Keeps crashing *2023-08-06* 1 star review as app is not functioning to be able to test. When tapping internal drive ratio app crashes every time ### 5/5 — Awesome app *2023-01-25* It helped me figure out exactly what I wanted. ### 4/5 — Setup *2023-01-22* Helps with setup ### 5/5 — Awesome App *2022-12-16* Makes calculating gear ratios easy. Tuning has been much easier ### 4/5 — Good app *2022-09-09* Really good app to have helped out a lot ### 2/5 — Could be good *2022-06-17* Currently won’t allow changing any values, always reverting to what was previously set. Frustrating. Also does not handle screen ratio properly, and hides important buttons behind the keyboard. ### 5/5 — Great app. *2021-10-19* Helped me get a perfect top out speed and keep good temps. ## Frequently asked questions about RC Pit Calc Pro ### What is RC Pit Calc Pro? RC Pit Calc Pro is a utility app designed for RC car enthusiasts, offering a comprehensive set of calculators for gear ratios, suspension geometry, corner weights, and more. It aims to simplify performance tuning and maintenance for RC vehicles. ### Does RC Pit Calc Pro have ads? Yes, RC Pit Calc Pro contains advertisements. As a free application with in-app purchases, ads are displayed to support its continued development and availability. ### What calculators are included in RC Pit Calc Pro? RC Pit Calc Pro includes calculators for gear ratio, final drive ratio, rollout, pill insert/suspension geometry, corner weight, oil temperature and viscosity, fuel usage, top speed, and oil blending. ### Can RC Pit Calc Pro store data for multiple cars? Yes, the app remembers your data entries for each car, allowing you to manage settings and calculations for multiple RC vehicles within the application. It also includes basic car data for hundreds of popular models. ### How often is RC Pit Calc Pro updated? The latest version of RC Pit Calc Pro is 3.3.3, last updated on January 20, 2026. Updates typically include new features, bug fixes, and improvements based on user feedback. ### What is the age rating for RC Pit Calc Pro? RC Pit Calc Pro has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content restrictions. ### What devices support RC Pit Calc Pro? RC Pit Calc Pro is available on iPhone, iPad, and iPod devices. It is designed to function across Apple's mobile operating system. ### What is the user rating for RC Pit Calc Pro? RC Pit Calc Pro has a user rating of 4.4 stars based on 23 ratings. This suggests a generally positive reception from its user base. ## Version history (last 5 releases) ### 3.6.0 — 2026-08-25 • Fixed the second input box being pushed off the edge of the screen on Fuel Usage • Dividers and edges across the app were too faint to see. They now meet accessibility contrast standards • A refreshed home screen and a new startup screen ### 3.5.2 — 2026-08-20 • Fixed the second input box being pushed off the edge of the screen on Fuel Usage • Dividers and edges across the app were too faint to see. They now meet accessibility contrast standards • A refreshed home screen and a new startup screen ### 3.5.0 — 2026-08-18 • Corner Weights is redrawn: your car's balance shows as a board with a marker. Set a balance target per car and each side shows the grams it is off. Cross weight is now an axis of its own. • Short corner labels (LF, RF, LR, RR), with a setting for full names. • The total weight is bigger and easier to read. • Translation fixes in Czech, French, Spanish and German. ### 3.4.9 — 2026-08-14 • Fixed the second input box being pushed off the edge of the screen on Fuel Usage • Dividers and edges across the app were too faint to see. They now meet accessibility contrast standards • A refreshed home screen and a new startup screen • Fonts now ship with the app, so text appears right away and nothing is downloaded • The gearing advice button now appears only when it has something to suggest, and offers to add your motor when that is all that is missing • Fixed crashes that could close the app when the network dropped ### 3.4.7 — 2026-08-06 • Fixed a crash when you cleared the Tank size box on Fuel Usage • Fixed a crash when you deselected your last gear in the gear chooser • Signing in no longer crashes if your connection drops for a moment ## Apps similar to RC Pit Calc Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Rollout Calculator - RC DD car](https://appshunter.io/ios/app/rollout-calculator-rc-dd-car/id6451037467) | 4.9 (7) | Free | Utilities | | [FuriCar](https://appshunter.io/ios/app/furicar/id1548174613) | 3.8 (40) | Free | Utilities | | [R1WURKS](https://appshunter.io/ios/app/r1wurks/id1449942877) | 4.1 (15) | Free | Utilities | | [RC Gears](https://appshunter.io/ios/app/rc-gears/id1545490832) | 4.5 (55) | Free | Utilities | | [HW Link V2](https://appshunter.io/ios/app/hw-link-v2/id1539374531) | 3.5 (34) | Free | Utilities | | [Castle Link](https://appshunter.io/ios/app/castle-link/id1215086336) | 1.8 (32) | Free | Utilities | ## More apps by Degree3, Inc. - [RC Setup App by So Dialed](https://appshunter.io/ios/app/rc-setup-app-by-so-dialed/id1500271134) - [Crawl Scorekeeper Legacy](https://appshunter.io/ios/app/crawl-scorekeeper-legacy/id1539045657) - [RC Fuel Mileage Calculator](https://appshunter.io/ios/app/rc-fuel-mileage-calculator/id1545535747) - [RC Pill Insert Calculator](https://appshunter.io/ios/app/rc-pill-insert-calculator/id1550425395) - [RC AI Mechanic](https://appshunter.io/ios/app/rc-ai-mechanic/id1645671690) All apps by Degree3, Inc.: https://appshunter.io/developer/1497876563 ## Related topics [rc gears](https://appshunter.io/ios/topics/rc-gears) · [fdr calculator](https://appshunter.io/ios/topics/fdr-calculator) · [gear calculator pro](https://appshunter.io/ios/topics/gear-calculator-pro) · [rc rollout calculator](https://appshunter.io/ios/topics/rc-rollout-calculator) · [rc car setup wizard](https://appshunter.io/ios/topics/rc-car-setup-wizard) · [rc gear calculator](https://appshunter.io/ios/topics/rc-gear-calculator) · [gear ratio calculator lite](https://appshunter.io/ios/topics/gear-ratio-calculator-lite) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*