# 中存OA vs STMLink

The clearest difference is update cadence: 中存OA at every 3 weeks against STMLink's every 8 months. 中存OA also leads on device support. On price, in-app purchases 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.

中存OA ships an update every 3 weeks, STMLink every 8 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 中存OA | STMLink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Size | 40 MB | 77 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Zhongcun Big Data Technology Co., Ltd.](https://appshunter.io/developer/1616082137) | [Hangzhou Freewind Technology Co., Ltd.](https://appshunter.io/developer/964505043) |

## What reviewers say

### 中存OA

[App page](https://appshunter.io/ios/app/oa/id1616082135)

**Features:** macOS Compatibility

**In-app purchases:** none


### STMLink

[App page](https://appshunter.io/ios/app/stmlink/id6566185311)

**In-app purchases:** none


## Frequently asked questions

### Is 中存OA free?

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

### Is STMLink free?

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

### Which is updated more often, 中存OA or STMLink?

中存OA ships an update every 3 weeks, and STMLink every 8 months. Most recently, 中存OA was updated on October 10, 2026 and STMLink on September 30, 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.*