# HW Link V2 vs CastleLink2

The clearest difference is rating: CastleLink2 at 5.0 against HW Link V2's 3.5. CastleLink2 also leads on update cadence (monthly vs every 3 months). HW Link V2's advantage is ratings volume (34 vs 2) and iOS requirement (11.0 vs 26.0). 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.

CastleLink2 holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: HW Link V2 has 34 ratings behind it against 2, so its average is the more settled of the two.

HW Link V2 ships an update every 3 months, CastleLink2 monthly. The most recent releases landed on August 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | HW Link V2 | CastleLink2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (34 ratings)](https://appshunter.io/ios/app/hw-link-v2/id1539374531/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/castlelink2/id6743709203/reviews)** |
| Number of ratings | **34** | 2 |
| Positive reviews | 28.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 53 MB | 35 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hobbywing Technology Co.,Ltd](https://appshunter.io/developer/1033124554) | [Castle Creations Inc](https://appshunter.io/developer/1377811229) |

## What reviewers say

### HW Link V2

[App page](https://appshunter.io/ios/app/hw-link-v2/id1539374531)

This application allows users to wirelessly program ESC parameters on compatible car, aircraft, and boat electronic speed controllers. Connect via a WiFi module or OTA Programmer to adjust settings remotely from your smartphone.

**Highlights:** Wireless ESC programming, Remote parameter adjustment, Smartphone control, Supports car, aircraft, and boat ESCs, Compatible with HW WiFi express module/OTA Programmer

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

**In-app purchases:** none


### CastleLink2

[App page](https://appshunter.io/ios/app/castlelink2/id6743709203)

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.

**Highlights:** Connect to Castle Creations ESCs/BECs, Adjust settings, Update firmware, View data logs, Supports B-Link adapters, Wide ESC/BEC compatibility

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

**In-app purchases:** none


## Frequently asked questions

### Is HW Link V2 free?

HW Link V2 is free to download, with no in-app purchases.

### Is CastleLink2 free?

CastleLink2 is free to download, with no in-app purchases.

### Which has better reviews, HW Link V2 or CastleLink2?

CastleLink2 is rated higher. HW Link V2 averages 3.5 out of 5 from 34 ratings, while CastleLink2 averages 5.0 from 2 ratings.

### Do HW Link V2 or CastleLink2 have ads?

Neither HW Link V2 nor CastleLink2 shows ads.

### Which is updated more often, HW Link V2 or CastleLink2?

HW Link V2 ships an update every 3 months, and CastleLink2 monthly. Most recently, HW Link V2 was updated on August 18, 2026 and CastleLink2 on September 8, 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.*