StudioXm vs Castle Link
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StudioXm
This utility app allows configuration and management of specific flybarless receivers and related devices for RC helicopters. It offers features like preset backup/restore, firmware updates, and a flight logbook for battery monitoring.
- Configure flybarless receivers
- Backup and restore presets
- Perform device updates
- Load helicopter specific presets
- Flight log book for battery monitoring
- Connects via BLE2SYS Bluetooth interface
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StudioX mobile App connects your iOS device with your BEASTX MICROBEAST, MICROBEAST PLUS, MICROBEAST ULTRA, NANOBEAST and SPEKTRUM AR7200BX, AR7300BX, AR7210BX flybarless receiver. You can use it to configure your devices, backup and restore presets, perform updates, load helicopter specific presets and much more... Additionally StudioX features a flight log book for monitoring your lipo batteries used in RC helicopters or other RC applications. Please note: To connect to your device the BLE2SYS Bluetooth interface is required.
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: StudioXm at 3.3 against Castle Link's 1.8. Castle Link's advantage is update cadence (monthly vs every 2 months) and ratings volume (32 vs 4). On price, ads, in-app purchases and monetization model 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.
StudioXm holds the better App Store score, 3.3 against 1.8. That said, the two scores are not equally well evidenced: Castle Link has 32 ratings behind it against 4, so its average is the more settled of the two.
StudioXm ships an update every 2 months, Castle Link monthly. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.
| Parameter | StudioXm | Castle Link |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | 1.8 (32 ratings) |
| Positive reviews | — | 18.2% of reviews |
| Number of ratings | 4 | 32 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | freakware | Castle Creations Inc |
Customer experience
StudioXm
Castle Link
In-app purchases
StudioXm
No in-app purchases
Castle Link
No in-app purchases
