# 中讯 vs Siyou B2B

The clearest difference is update cadence: Siyou B2B at every 2 weeks against 中讯's every 5 months. 中讯's advantage is iOS requirement (8.0 vs 15.0). 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.

中讯 ships an update every 5 months, Siyou B2B every 2 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 中讯 | Siyou B2B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 4 MB | 57 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DENSEN INFORMATICA SL](https://appshunter.io/developer/1498606556) | [SIYOU TECHNOLOGY S.R.L](https://appshunter.io/developer/1466639725) |

## What reviewers say

### 中讯

[App page](https://appshunter.io/ios/app/id990719236)

**Features:** macOS Compatibility

**In-app purchases:** none


### Siyou B2B

[App page](https://appshunter.io/ios/app/siyou-b2b/id1482752003)

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 中讯 free?

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

### Is Siyou B2B free?

Siyou B2B is free to download, with no in-app purchases.

### Do 中讯 or Siyou B2B have ads?

Neither 中讯 nor Siyou B2B shows ads.

### Which is updated more often, 中讯 or Siyou B2B?

中讯 ships an update every 5 months, and Siyou B2B every 2 weeks. Most recently, 中讯 was updated on October 17, 2026 and Siyou B2B on October 6, 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.*