# XDFLY vs SUNNYSKY

The clearest difference is update cadence: SUNNYSKY at every 9 days against XDFLY's every 6 weeks. SUNNYSKY also leads on iOS requirement (12.4 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

XDFLY ships an update every 6 weeks, SUNNYSKY every 9 days. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | XDFLY | SUNNYSKY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/xdfly/id6449901550/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 9 MB | 5 MB |
| Requires iOS | 17.6 | **12.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [鹏 杜](https://appshunter.io/developer/1623719348) | [翔 任](https://appshunter.io/developer/1680645716) |

## What reviewers say

### XDFLY

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

This application connects to your device's Bluetooth to adjust ESC parameters, view real-time data, and update firmware. It provides essential control and monitoring for your electronic speed controllers.

**Highlights:** Bluetooth connectivity, ESC parameter adjustment, Real-time data viewing, Firmware upgrades

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

**In-app purchases:** none


### SUNNYSKY

[App page](https://appshunter.io/ios/app/sunnysky/id6472908945)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is XDFLY free?

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

### Is SUNNYSKY free?

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

### Do XDFLY or SUNNYSKY have ads?

Neither XDFLY nor SUNNYSKY shows ads.

### Which is updated more often, XDFLY or SUNNYSKY?

XDFLY ships an update every 6 weeks, and SUNNYSKY every 9 days. Most recently, XDFLY was updated on October 30, 2026 and SUNNYSKY on October 27, 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.*