# 华阳OA vs ESA

The clearest difference is ads: 华阳OA at none against ESA's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | 华阳OA | ESA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | — |
| Size | 61 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京车车网络技术有限公司](https://appshunter.io/developer/1299608242) | [艺霖 王](https://appshunter.io/developer/1798861145) |

## What reviewers say

### 华阳OA

[App page](https://appshunter.io/ios/app/oa/id6478900188)

**Features:** Vision Pro support

**In-app purchases:** none


### ESA

[App page](https://appshunter.io/ios/app/esa/id6742539628)

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

**In-app purchases:** none


## Frequently asked questions

### Is 华阳OA free?

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

### Is ESA free?

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

### Do 华阳OA or ESA have ads?

ESA shows ads; 华阳OA does not.

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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.*