# WCHBleUart vs ZMAX

The clearest difference is update cadence: WCHBleUart at every 10 days against ZMAX's every 12 months. 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.

WCHBleUart ships an update every 10 days, ZMAX every 12 months. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | WCHBleUart | ZMAX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 12 months |
| Size | 5 MB | 72 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [南京沁恒微电子股份有限公司](https://appshunter.io/developer/1580700719) | [日聪 吴](https://appshunter.io/developer/1181237165) |

## What reviewers say

### WCHBleUart

[App page](https://appshunter.io/ios/app/wchbleuart/id1603743502)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZMAX

[App page](https://appshunter.io/ios/app/zmax/id6451305336)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WCHBleUart free?

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

### Is ZMAX free?

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

### Do WCHBleUart or ZMAX have ads?

Neither WCHBleUart nor ZMAX shows ads.

### Which is updated more often, WCHBleUart or ZMAX?

WCHBleUart ships an update every 10 days, and ZMAX every 12 months. Most recently, WCHBleUart was updated on September 29, 2026 and ZMAX on October 12, 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.*