# DX vs CHANGYUN

DX and CHANGYUN are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

DX ships an update every 3 months, CHANGYUN every 2 months. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | DX | CHANGYUN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/dx-smart/id1641509844/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 9 MB | 48 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [官志 周](https://appshunter.io/developer/1633926701) | [江苏行运兔互联网科技有限公司](https://appshunter.io/developer/1536117598) |

## What reviewers say

### DX

[App page](https://appshunter.io/ios/app/dx-smart/id1641509844)

This utility app facilitates wireless control and data transmission for smart products via Bluetooth. It allows for device scanning, connection, information reading, and data read/write operations. Users can also filter scanned devices by name and signal strength.

**Highlights:** Device scanning, Device connection, Device information reading, Data read and write, Filter devices by name and RSSI, Wireless control

**Features:** macOS Compatibility

**In-app purchases:** none


### CHANGYUN

[App page](https://appshunter.io/ios/app/changyun/id6474402926)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DX free?

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

### Is CHANGYUN free?

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

### Do DX or CHANGYUN have ads?

Neither DX nor CHANGYUN shows ads.

### Which is updated more often, DX or CHANGYUN?

DX ships an update every 3 months, and CHANGYUN every 2 months. Most recently, DX was updated on September 29, 2026 and CHANGYUN on October 9, 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.*