# SpeedyBee App vs Castle Link

The clearest difference is rating: SpeedyBee App at 3.3 against Castle Link's 1.8. SpeedyBee App also leads on review sentiment (39% vs 18%) and update cadence (every 2 weeks vs monthly). Castle Link's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SpeedyBee App holds the better App Store score, 3.3 against 1.8. Both are backed by a comparable volume of ratings — 120 and 32 respectively. Written reviews point the same way: 39% of SpeedyBee App's written reviews are positive against 18% of Castle Link's.

SpeedyBee App ships an update every 2 weeks, Castle Link monthly. The most recent releases landed on September 23, 2026 and June 13, 2026 respectively.

## The numbers

| Metric | SpeedyBee App | Castle Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (120 ratings)](https://appshunter.io/ios/app/speedybee-app/id1150315028/reviews)** | [1.8 (32 ratings)](https://appshunter.io/ios/app/castle-link/id1215086336/reviews) |
| Number of ratings | **120** | 32 |
| Positive reviews | **38.6% of reviews** | 18.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 292 MB | 39 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [珠海市快蜂科技有限公司](https://appshunter.io/developer/1846813771) | [Castle Creations, Inc.](https://appshunter.io/developer/1377811229) |

## What reviewers say

### SpeedyBee App

[App page](https://appshunter.io/ios/app/speedybee-app/id1150315028)

This application allows users to adjust flight controller parameters wirelessly via Bluetooth. It supports various flight controller firmwares and requires a compatible mobile device. Easily configure your drone's settings on the go.

**Highlights:** Wireless flight controller parameter adjustment, Bluetooth connectivity, Supports Betaflight, iNav, and Butterflight, Automatic Bluetooth activation/deactivation (with SpeedyBee adapter), Mobile device configuration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Wireless field configuration without laptop
- 📱 Seamless Betaflight integration
- 🔧 Quick PID tuning adjustments in field
- ⚡ Fast Bluetooth connectivity
- 🎯 Comprehensive flight controller management

**What reviewers complain about**

- 🐛 Frequent app crashes
- 📡 Unstable Bluetooth connections
- ❌ No wired/USB-C connection on iOS
- ⚠️ Poor iOS support compared to Android
- 🔋 Excessive battery drain

**Reported bugs**

- App crashes on startup (iOS 13-17)
- Crashes when saving settings
- Crashes when accessing Blackbox tab
- Crashes when entering CLI commands
- Crashes when selecting motors in Betaflight

**Requested features**

- INAV 8.0+ support (most requested)
- USB-C/OTG cable connection support
- Wired connection option for iOS
- PID Toolbox integration
- Blackbox log reading improvements


### Castle Link

[App page](https://appshunter.io/ios/app/castle-link/id1215086336)

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.

**Highlights:** Wireless programming via Bluetooth, Firmware updates, Save and load custom profiles, Sync settings across iOS devices, Offline functionality, Data log viewing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpeedyBee App free?

SpeedyBee App is free to download, with no in-app purchases.

### Is Castle Link free?

Castle Link is free to download, with no in-app purchases.

### Which has better reviews, SpeedyBee App or Castle Link?

SpeedyBee App is rated higher. SpeedyBee App averages 3.3 out of 5 from 120 ratings, while Castle Link averages 1.8 from 32 ratings.

### Do SpeedyBee App or Castle Link have ads?

Neither SpeedyBee App nor Castle Link shows ads.

### Which is updated more often, SpeedyBee App or Castle Link?

SpeedyBee App ships an update every 2 weeks, and Castle Link monthly. Most recently, SpeedyBee App was updated on September 23, 2026 and Castle Link on June 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*