This application allows users to wirelessly program ESC parameters on compatible car, aircraft, and boat electronic speed controllers. Connect via a WiFi module or OTA Programmer to adjust settings remotely from your smartphone.
3.5(31 ratings)
Free
Best apps like Castle Link
10+ similar apps compared and reviewed
3.8 avg rating
10 free apps
Updated July 2026
Castle Link is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to Castle Link
RC Gears by SkyRC Technology Co.,Ltd.
Strong Contender
🔧 Utilities
4.5😊(55 ratings)
Free
This application connects to a specific corner weight system to measure and display the weight distribution of RC cars. Users can view data, calibrate the scale, and adjust settings like auto power-off via Bluetooth. It's designed for precise weight analysis in RC racing.
What We Love
- 👍 Easy to use
- 🚀 Accurate results
- ✨ Clean interface
- ✅ Works smoothly
Room to Improve
- 🐛 Glitchy app
- 🐛 App freezing
- 🐛 Bluetooth connection issues
4.4(23 ratings)
FreeAdsIn-App Purchases
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.
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4
FuriCar
App for RC parameter settings
Free
Configure and upgrade your RC racing car with this mobile app. Connect via Bluetooth to adjust every parameter, visualize telemetry data with charts, and enhance your vehicle's performance.
Bluetooth connectivity for RC carsFull parameter configurationRC car upgrades via app
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free5
RC Speed Calculator Pro
How fast can your RC car go?
Free
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.
Estimate RC car top speedInput gearing, motor, and battery infoRecord speed estimates
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(23)
free6
RC AI Mechanic
Get answers anytime, anywhere
Free
Get instant AI-powered advice for your remote-controlled car racing needs. Ask questions about setups, adjustments, and parts for various scales and racing types. The app remembers your car details for personalized recommendations.
AI-powered mechanic for instant answersAdvice for 1/8, 1/10, 1/12 scale carsSpecializes in on-road, off-road, oval, drift, drag racing
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(23)
free with in-app purchases7
R1WURKS
by Steve Villanueva
Free
This utility app connects to your ESC and smart devices, allowing wireless programming and real-time racing data monitoring. It stores up to 50 minutes of driving information for easy review and analysis.
Wireless ESC programmingReal-time racing dataDriving data storage
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(15)
free8
ISD Go
ISDT
Free
Control and manage wireless smart devices with a user-friendly interface. Connect and operate devices via Bluetooth, and receive automatic firmware updates when new versions are available.
Connect BLE smart devicesWireless device operationAutomatic firmware detection
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free9
RC Speed Run
Log and share RC speed runs
Free
Easily log and review your RC car speed runs. Record detailed setup information, run specifics like speed and weather, and optionally share your performance with other enthusiasts.
Log RC car setup detailsRecord run specifics (speed, location, weather)Save pictures of car setup
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(8)
free10
SkyRC
by SkyRC Technology Co.,Ltd.
Free
Monitor and control your Multifunction Battery Charger in real-time. This app provides Bluetooth connectivity to display charging and discharging data for your Apple devices.
Real-time charging/discharging dataBluetooth communicationMonitor Apple devices (iPod, iPhone, iPad)
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(9)
free