# 知微宇宙 AstroPearl vs 桥建OA

The clearest difference is update cadence: 桥建OA at every 2 days against 知微宇宙 AstroPearl's every 5 weeks. 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.

知微宇宙 AstroPearl ships an update every 5 weeks, 桥建OA every 2 days. The most recent releases landed on October 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 知微宇宙 AstroPearl | 桥建OA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Size | 614 MB | 37 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Sanwu Yaofa Technology Limited.](https://appshunter.io/developer/1818322110) | [武汉海昌信息技术有限公司](https://appshunter.io/developer/1050059214) |

## What reviewers say

### 知微宇宙 AstroPearl

[App page](https://appshunter.io/ios/app/astropearl/id6746753340)

**In-app purchases:** none


### 桥建OA

[App page](https://appshunter.io/ios/app/oa/id6746786852)

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

**In-app purchases:** none


## Frequently asked questions

### Is 知微宇宙 AstroPearl free?

知微宇宙 AstroPearl is free to download, with no in-app purchases.

### Is 桥建OA free?

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

### Do 知微宇宙 AstroPearl or 桥建OA have ads?

Neither 知微宇宙 AstroPearl nor 桥建OA shows ads.

### Which is updated more often, 知微宇宙 AstroPearl or 桥建OA?

知微宇宙 AstroPearl ships an update every 5 weeks, and 桥建OA every 2 days. Most recently, 知微宇宙 AstroPearl was updated on October 16, 2026 and 桥建OA on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*