# 霖观 vs 知行AI

The clearest difference is in-app purchases: 知行AI at none against 霖观's 4. 知行AI also leads on update cadence (every 2 weeks vs every 5 weeks). 霖观's advantage is iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. 霖观 sells 4 one-off in-app purchases. 知行AI asks for nothing beyond the download.

霖观 ships an update every 5 weeks, 知行AI every 2 weeks. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 霖观 | 知行AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 14 MB | 29 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [金珂 李](https://appshunter.io/developer/1654843252) | [Hunan Eagle Infor. Tec.Development. Co.,Ltd.](https://appshunter.io/developer/979121213) |

## What reviewers say

### 霖观

[App page](https://appshunter.io/ios/app/id6450410286)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 霖观98元课程 | $14.99 | one-time |
| 霖观198元课程 | $29.99 | one-time |
| 霖观298元课程 | $39.99 | one-time |
| 霖观5988元课程 | $899.99 | one-time |


### 知行AI

[App page](https://appshunter.io/ios/app/ai/id6743461129)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 霖观 free?

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

### Is 知行AI free?

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

### Do 霖观 or 知行AI have ads?

Neither 霖观 nor 知行AI shows ads.

### Which is updated more often, 霖观 or 知行AI?

霖观 ships an update every 5 weeks, and 知行AI every 2 weeks. Most recently, 霖观 was updated on September 22, 2026 and 知行AI on September 26, 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.*