# xbyt数据助理 vs UDAN EMS

The clearest difference is iOS requirement: xbyt数据助理 at 11.0 against UDAN EMS's 15.0. 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.

xbyt数据助理 ships an update every 3 weeks, UDAN EMS every 5 weeks. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | xbyt数据助理 | UDAN EMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Size | 24 MB | 34 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiangsu Leshi Xinan Technology Co., Ltd](https://appshunter.io/developer/1546308735) | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) |

## What reviewers say

### xbyt数据助理

[App page](https://appshunter.io/ios/app/xbyt/id6443870303)

**Features:** macOS Compatibility

**In-app purchases:** none


### UDAN EMS

[App page](https://appshunter.io/ios/app/udan-ems/id6467070220)

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

**In-app purchases:** none


## Frequently asked questions

### Is xbyt数据助理 free?

xbyt数据助理 is free to download, with no in-app purchases.

### Is UDAN EMS free?

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

### Do xbyt数据助理 or UDAN EMS have ads?

Neither xbyt数据助理 nor UDAN EMS shows ads.

### Which is updated more often, xbyt数据助理 or UDAN EMS?

xbyt数据助理 ships an update every 3 weeks, and UDAN EMS every 5 weeks. Most recently, xbyt数据助理 was updated on October 27, 2026 and UDAN EMS on November 3, 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.*