# MC3000 vs Castle Link

The clearest difference is rating: MC3000 at 3.8 against Castle Link's 1.8. MC3000 also leads on review sentiment (34% vs 18%) and iOS requirement (9.0 vs 12.0). Castle Link's advantage is update cadence (monthly vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

MC3000 holds the better App Store score, 3.8 against 1.8. Both are backed by a comparable volume of ratings — 14 and 32 respectively. Written reviews point the same way: 34% of MC3000's written reviews are positive against 18% of Castle Link's.

MC3000 ships an update every 3 months, Castle Link monthly. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | MC3000 | Castle Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/mc3000/id949072025/reviews)** | [1.8 (32 ratings)](https://appshunter.io/ios/app/castle-link/id1215086336/reviews) |
| Number of ratings | 14 | **32** |
| Positive reviews | **33.7% of reviews** | 18.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 6 MB | 39 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SkyRC Technology Co.,Ltd.](https://appshunter.io/developer/580032028) | [Castle Creations Inc](https://appshunter.io/developer/1377811229) |

## What reviewers say

### MC3000

[App page](https://appshunter.io/ios/app/mc3000/id949072025)

Monitor your Apple device's charging and discharging data in real-time. This app provides comprehensive charging insights for pilots and racers, putting charger control at your fingertips via Bluetooth.

**Highlights:** Real-time charging data monitoring, Bluetooth communication, Discharging data display, Compatible with iTouch, iPhone, iPad, Suitable for pilots and racers

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 MC3000 free?

MC3000 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, MC3000 or Castle Link?

MC3000 is rated higher. MC3000 averages 3.8 out of 5 from 14 ratings, while Castle Link averages 1.8 from 32 ratings.

### Do MC3000 or Castle Link have ads?

Neither MC3000 nor Castle Link shows ads.

### Which is updated more often, MC3000 or Castle Link?

MC3000 ships an update every 3 months, and Castle Link monthly. Most recently, MC3000 was updated on October 16, 2026 and Castle Link on October 2, 2026.

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