SkyRC vs Castle Link
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkyRC
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 data
- Bluetooth communication
- Monitor Apple devices (iPod, iPhone, iPad)
- Suitable for pilots and racers
- Portable computing integration
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SkyCharger seamlessly integrates advancements in portable computing with the Multifunction Battery Charger; bringing real-time monitoring to your Apple® devices such as the iPod, iPhone and iPad. With the Bluetooth communication, the SkyCharger can display your charger’s charging/discharging data. Whether you are an enthusiastic pilot demanding comprehensive charging data or an everyday sport racer looking for that high performance, the SkyCharger puts the charger at your fingertips.
Castle Link
Wirelessly program and update settings for compatible electronic speed controllers and BEC devices. Save and sync profiles across devices, and access data logs without an internet connection.
- Wireless programming via Bluetooth
- Firmware updates
- Save and load custom profiles
- Sync settings across iOS devices
- Offline functionality
- Data log viewing
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The Castle Link™ app enables users to wirelessly program settings and update firmware on any current Castle Creations ESC, many older models and the BEC 2.0/BEC Pro using the waterproof Castle B•LINK Bluetooth® adapter. You can quickly alter parameters and fine-tune adjustments anytime, anywhere. - Save profiles to allow for quick changes between settings - Sync information between multiple iOS devices - No data/internet connection required - The Castle Link app can be used with multiple B•LINK adapters or can store vehicle information and allow users to use one adapter on multiple vehicles - Each B•LINK is protected with a 4-digit passcode to prevent tampering with your settings - Download and View Data Logs from compatible controllers Requirements: - Castle B•LINK Bluetooth adapter (011-0135-00)
Screenshots
Verdict
The clearest difference is rating: SkyRC at 2.4 against Castle Link's 1.8. SkyRC also leads on review sentiment (31% vs 18%). Castle Link's advantage is ratings volume (32 vs 10). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SkyRC holds the better App Store score, 2.4 against 1.8. Both are backed by a comparable volume of ratings — 10 and 32 respectively. Written reviews point the same way: 31% of SkyRC's written reviews are positive against 18% of Castle Link's.
SkyRC ships an update every 3 weeks, Castle Link monthly. The most recent releases landed on September 22, 2026 and June 13, 2026 respectively.
| Parameter | SkyRC | Castle Link |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (10 ratings) — better | 1.8 (32 ratings) |
| Positive reviews | 30.8% of reviews — better | 18.2% of reviews |
| Number of ratings | 10 | 32 — better |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 53 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | SkyRC Technology Co.,Ltd. | Castle Creations, Inc. |
Customer experience
SkyRC
Castle Link
In-app purchases
SkyRC
No in-app purchases
Castle Link
No in-app purchases
