# Castle Link vs Mineral Bin

The clearest difference is device support: Castle Link at 3 against Mineral Bin's 1. Castle Link also leads on iOS requirement (12.0 vs 16.0). On price, update cadence, 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Castle Link | Mineral Bin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (32 ratings)](https://appshunter.io/ios/app/castle-link/id1215086336/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Size | 39 MB | 1 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Castle Creations Inc](https://appshunter.io/developer/1377811229) | [Colorado State University](https://appshunter.io/developer/527760765) |

## What reviewers say

### 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

**What reviewers like**

- 👍 Easy to program ESC
- 👍 Data logging is fantastic
- 👍 Save profile feature is useful
- 👍 Convenient for quick setting changes

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 App freezes often
- 🐛 Bluetooth connection issues
- 🐛 Bricks ESCs
- 🐛 Throttle curve not working

**Reported bugs**

- App crashes on passcode entry
- App freezes
- Bluetooth connection problems
- Bricking ESCs
- Throttle curve not working

**Requested features**

- Add data logging to iOS app
- Allow viewing data logs on phone
- Fix throttle curve interface
- Add Android application
- Make motor test selectable


### Mineral Bin

[App page](https://appshunter.io/ios/app/mineral-bin/id6468026608)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Castle Link free?

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

### Is Mineral Bin free?

Mineral Bin is free to download, with no in-app purchases.

### Do Castle Link or Mineral Bin have ads?

Neither Castle Link nor Mineral Bin shows ads.

### Which is updated more often, Castle Link or Mineral Bin?

Castle Link ships an update monthly, and Mineral Bin monthly. Most recently, Castle Link was updated on October 14, 2026 and Mineral Bin on October 11, 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.*