RC Gears vs CastleLink2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RC Gears
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.
- Measure RC car weight distribution
- View weight data via Bluetooth
- Calibrate the scale
- Set auto power-off time
- Connects to SCWS2000 system
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The Weighing app is specially designed for SkyRC SCWS2000 Corner Weight System to measure the RC car's weight distribution. The RC racers can view the weight data, calibrate the scale, set the auto power-off time through the App via Bluetooth, and so on. Weighing是一款专为SkyRC SCWS2000智能蓝牙称重器而设计的App，用以测量模型车4个角的重量分布，通过蓝牙连接App查看模型车重量分配数据， 校准称重器，及设置自动关机时间等。
CastleLink2
Connect to Castle Creations ESCs and BECs via Bluetooth to adjust settings, update firmware, and view data logs. Compatible with a wide range of ESCs and BECs, supporting both B-Link hardware versions.
- Connect to Castle Creations ESCs/BECs
- Adjust settings
- Update firmware
- View data logs
- Supports B-Link adapters
- Wide ESC/BEC compatibility
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Allows you to connect to most Castle Creations ESCs and BECs using the B-Link Bluetooth adapter. Adjust settings, update firmware, and view data logs (on supported products). Compatible with all Cobra, Talon, Copperhead, and X-series ESCs. It will also work with most Mamba and Sidewinder ESCs; as well as the CC BEC Pro and both CC BEC 2.0s. Supports the original B-Link and B-Link 2 hardware versions. Visit www.castlecreations.com/b-link for more information.
Screenshots
Verdict
The clearest difference is rating: CastleLink2 at 5.0 against RC Gears's 4.5. RC Gears's advantage is ratings volume (55 vs 2) and iOS requirement (11.0 vs 26.0). 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.
CastleLink2 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: RC Gears has 55 ratings behind it against 2, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on July 4, 2026 and September 8, 2026 respectively.
| Parameter | RC Gears | CastleLink2 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (55 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 94.2% of reviews | — |
| Number of ratings | 55 — better | 2 |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 60 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | SkyRC Technology Co.,Ltd. | Castle Creations Inc |
Customer experience
RC Gears
CastleLink2
Bugs and requests
RC Gears
Reported bugs
9 issues- Doesn't connect to Bluetooth with iOS 18
- Shows errors on scales
- Max speed shown is rounded to a whole number
- App still freezing up when trying to get speed information
- Bluetooth reconnect not always working
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- New update has made drag racing unusable (no time or graph displayed)
- Scales are glitchy and give different readings
- Micro USB breaking off the board (older versions)
- Bluetooth connection issue reported
Requested features
11 requests- Ability to save preset/default distances on drag mode
- Ability to export data for analysis (e.g., with Excel)
- Support for 1/5 cars
- More functions for GNSS performance analyzer
- Waterproof GNSS
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- New GPS meter with LCD display
- Record coordinates
- More applications for the device
- Develop a corner weight system for 1/5 scale
- More features for GNSS performance analyzer
- Clearer connection process explanation
CastleLink2
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RC Gears
No in-app purchases
CastleLink2
No in-app purchases
