# 法天使 vs 阿尔法系统

The clearest difference is in-app purchases: 阿尔法系统 at none against 法天使's 12. 阿尔法系统 also leads on update cadence (every 3 days vs every 3 weeks). 法天使's advantage is iOS requirement (12.0 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. 法天使 sells 12 one-off in-app purchases. 阿尔法系统 asks for nothing beyond the download.

法天使 ships an update every 3 weeks, 阿尔法系统 every 3 days. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 法天使 | 阿尔法系统 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 38 MB | 61 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Fatianshi Beijing Technology Co., Ltd](https://appshunter.io/developer/1509153082) | [深圳市硕赢互动信息技术有限公司](https://appshunter.io/developer/1676430309) |

## What reviewers say

### 法天使

[App page](https://appshunter.io/ios/app/id1509153083)

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30天使币 | $3.99 | one-time |
| 98天使币 | $14.99 | one-time |
| 《合同七讲》第3季：合同起草审查指南团体标准自学指引 | $14.99 | one-time |
| 198天使币 | $29.99 | one-time |
| 298天使币 | $46.99 | one-time |
| 合同起草服务 | $59.99 | one-time |
| 标准合同课：建设工程卷 | $59.99 | one-time |
| 标准合同课：房地产开发卷 | $99.99 | one-time |
| 标准合同课：公司及并购卷 | $99.99 | one-time |
| 698天使币 | $109.99 | one-time |
| 1998天使币 | $299.99 | one-time |
| 律协专区：标准合同课 | $299.99 | one-time |


### 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 法天使 free?

法天使 is free to download, with in-app purchases available.

### Is 阿尔法系统 free?

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

### Do 法天使 or 阿尔法系统 have ads?

Neither 法天使 nor 阿尔法系统 shows ads.

### Which is updated more often, 法天使 or 阿尔法系统?

法天使 ships an update every 3 weeks, and 阿尔法系统 every 3 days. Most recently, 法天使 was updated on September 8, 2026 and 阿尔法系统 on September 14, 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.*