# E天OA vs 兰树办公OA

The clearest difference is iOS requirement: E天OA at 9.0 against 兰树办公OA's 13.5. 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.

E天OA ships an update every 5 weeks, 兰树办公OA every 3 weeks. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | E天OA | 兰树办公OA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 58 MB | 109 MB |
| Requires iOS | **9.0** | 13.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [杭州智晗信息技术有限公司](https://appshunter.io/developer/1255811002) | [浙江兰树化妆品有限公司](https://appshunter.io/developer/1588006508) |

## What reviewers say

### E天OA

[App page](https://appshunter.io/ios/app/eoa/id1361561477)

**Features:** macOS Compatibility

**In-app purchases:** none


### 兰树办公OA

[App page](https://appshunter.io/ios/app/oa/id1593158623)

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

**In-app purchases:** none


## Frequently asked questions

### Is E天OA free?

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

### Is 兰树办公OA free?

兰树办公OA is free to download, with no in-app purchases.

### Do E天OA or 兰树办公OA have ads?

Neither E天OA nor 兰树办公OA shows ads.

### Which is updated more often, E天OA or 兰树办公OA?

E天OA ships an update every 5 weeks, and 兰树办公OA every 3 weeks. Most recently, E天OA was updated on September 24, 2026 and 兰树办公OA on September 20, 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.*