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(34 ratings)
Free
Best Castle Link alternatives: apps like Castle Link
10+ similar apps compared and reviewed
3.9 avg rating
10 free apps
Updated October 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😊(56 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
- 💡 Compact and well-thought-out device
- 💯 Great value for money
- 🌟 Good customer service
- 🔧 Intuitive app interface
- 🚀 Fast connection
- ✅ Reliable performance
- 👍 Well laid out and easy to read
- 🚀 Efficient and simple to use
- ✅ Works as expected
- 👍 Very accurate
- 🌟 Fixes bugs in updates
- 💡 Supports multiple devices (RC cars, planes)
- ✅ Works with different OS versions
- 🚀 Quick setup
- 👍 Practical and useful
- ✅ Good for testing setups
Room to Improve
- 🐛 Glitchy app
- 🐛 App freezing
- 🐛 Bluetooth connection issues
- 🐛 Incompatible with iOS 18
- 🐛 Reduced functionality compared to older versions
- 🐛 Max speed rounded to whole number
- 🐛 Error messages on scales
- 🐛 New update made drag racing unusable
- 🐛 Scales give different readings when moved
- 🐛 Lacks explanation of settings
4.4(24 ratings)
FreeIn-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.
