# 长沙云OA vs 知知丫丫

The clearest difference is update cadence: 知知丫丫 at every 2 weeks against 长沙云OA's every 6 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.

长沙云OA ships an update every 6 months, 知知丫丫 every 2 weeks. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 长沙云OA | 知知丫丫 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 56 MB | 113 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Newtop LLC](https://appshunter.io/developer/852343038) | [Beijing Zhizhi Yaya Technology Co., Ltd](https://appshunter.io/developer/1725079838) |

## What reviewers say

### 长沙云OA

[App page](https://appshunter.io/ios/app/oa/id1645041617)

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

**In-app purchases:** none


### 知知丫丫

[App page](https://appshunter.io/ios/app/id6475754527)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 长沙云OA free?

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

### Is 知知丫丫 free?

知知丫丫 is free to download, with no in-app purchases.

### Do 长沙云OA or 知知丫丫 have ads?

Neither 长沙云OA nor 知知丫丫 shows ads.

### Which is updated more often, 长沙云OA or 知知丫丫?

长沙云OA ships an update every 6 months, and 知知丫丫 every 2 weeks. Most recently, 长沙云OA was updated on October 7, 2026 and 知知丫丫 on October 25, 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.*