# SCM APP vs 知虾

The clearest difference is update cadence: 知虾 at monthly against SCM APP's every 2 months. 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.

SCM APP ships an update every 2 months, 知虾 monthly. The most recent releases landed on November 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SCM APP | 知虾 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 156 MB | 39 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [南京理工科技系统有限公司](https://appshunter.io/developer/972965020) | [广州萌啦信息科技有限公司](https://appshunter.io/developer/1756891754) |

## What reviewers say

### SCM APP

[App page](https://appshunter.io/ios/app/scm-app/id1590952523)

**Features:** macOS Compatibility

**In-app purchases:** none


### 知虾

[App page](https://appshunter.io/ios/app/id6535681688)

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

**In-app purchases:** none


## Frequently asked questions

### Is SCM APP free?

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

### Is 知虾 free?

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

### Do SCM APP or 知虾 have ads?

Neither SCM APP nor 知虾 shows ads.

### Which is updated more often, SCM APP or 知虾?

SCM APP ships an update every 2 months, and 知虾 monthly. Most recently, SCM APP was updated on November 3, 2026 and 知虾 on October 7, 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.*