# ISD Link vs XDFLY

The clearest difference is rating: ISD Link at 2.1 against XDFLY's 1.0. ISD Link also leads on review sentiment (21% vs 0%) and ratings volume (23 vs 1). 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.

ISD Link holds the better App Store score, 2.1 against 1.0. That said, the two scores are not equally well evidenced: ISD Link has 23 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 21% of ISD Link's written reviews are positive against 0% of XDFLY's.

ISD Link ships an update every 3 weeks, XDFLY every 5 weeks. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | ISD Link | XDFLY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (23 ratings)](https://appshunter.io/ios/app/isd-link/id1568620244/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/xdfly/id6449901550/reviews) |
| Number of ratings | **23** | 1 |
| Positive reviews | **21.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 61 MB | 16 MB |
| Requires iOS | 13.0 | **12.4** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) | [鹏 杜](https://appshunter.io/developer/1623719348) |

## What reviewers say

### ISD Link

[App page](https://appshunter.io/ios/app/isd-link/id1568620244)

This app allows interaction with various smart devices. It prioritizes user privacy by saving all data locally and not collecting personal information. Bluetooth is required for device scanning and connection.

**Highlights:** Smart device interaction, Local data saving, No account registration, Bluetooth connectivity, Supports numerous device models

**Features:** macOS Compatibility

**In-app purchases:** none


### XDFLY

[App page](https://appshunter.io/ios/app/xdfly/id6449901550)

Connects to your device's Bluetooth to adjust ESC parameters, view data, and upgrade firmware. Offers a direct link for managing electronic speed controllers.

**Highlights:** Bluetooth ESC connection, Parameter adjustment, Data viewing, Firmware upgrades

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ISD Link free?

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

### Is XDFLY free?

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

### Which has better reviews, ISD Link or XDFLY?

ISD Link is rated higher. ISD Link averages 2.1 out of 5 from 23 ratings, while XDFLY averages 1.0 from 1 ratings.

### Do ISD Link or XDFLY have ads?

Neither ISD Link nor XDFLY shows ads.

### Which is updated more often, ISD Link or XDFLY?

ISD Link ships an update every 3 weeks, and XDFLY every 5 weeks. Most recently, ISD Link was updated on September 21, 2026 and XDFLY 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.*