# 案件云 vs 阿尔法系统

The clearest difference is update cadence: 阿尔法系统 at every 3 days against 案件云's every 6 weeks. 案件云's advantage is iOS requirement (13.0 vs 15.5). 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.

案件云 ships an update every 6 weeks, 阿尔法系统 every 3 days. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 案件云 | 阿尔法系统 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Size | 40 MB | 61 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Shanghai Luxing Information Technology Co., Ltd.](https://appshunter.io/developer/1575648011) | [深圳市硕赢互动信息技术有限公司](https://appshunter.io/developer/1676430309) |

## What reviewers say

### 案件云

[App page](https://appshunter.io/ios/app/id1575648009)

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

**In-app purchases:** none


### 阿尔法系统

[App page](https://appshunter.io/ios/app/id6446170604)

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

**In-app purchases:** none


## Frequently asked questions

### Is 案件云 free?

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

### Is 阿尔法系统 free?

阿尔法系统 is free to download, with no in-app purchases.

### Do 案件云 or 阿尔法系统 have ads?

Neither 案件云 nor 阿尔法系统 shows ads.

### Which is updated more often, 案件云 or 阿尔法系统?

案件云 ships an update every 6 weeks, and 阿尔法系统 every 3 days. Most recently, 案件云 was updated on September 15, 2026 and 阿尔法系统 on September 14, 2026.

---

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