# 海昌移动OA vs EHC

The clearest difference is iOS requirement: EHC at 13.0 against 海昌移动OA's 15.6. 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.

海昌移动OA ships an update every 2 weeks, EHC every 3 weeks. Both last shipped on October 18, 2026.

## The numbers

| Metric | 海昌移动OA | EHC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 36 MB | 107 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [武汉海昌信息技术有限公司](https://appshunter.io/developer/1050059214) | [河南海弘软件技术有限公司](https://appshunter.io/developer/1559676149) |

## What reviewers say

### 海昌移动OA

[App page](https://appshunter.io/ios/app/oa/id1494454619)

**Features:** macOS Compatibility

**In-app purchases:** none


### EHC

[App page](https://appshunter.io/ios/app/ehc/id1672170296)

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

**In-app purchases:** none


## Frequently asked questions

### Is 海昌移动OA free?

海昌移动OA is free to download, with no in-app purchases.

### Is EHC free?

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

### Do 海昌移动OA or EHC have ads?

Neither 海昌移动OA nor EHC shows ads.

### Which is updated more often, 海昌移动OA or EHC?

海昌移动OA ships an update every 2 weeks, and EHC every 3 weeks. Most recently, 海昌移动OA was updated on October 18, 2026 and EHC on October 18, 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.*