# 周公解梦 vs 国密标准

The clearest difference is price: 周公解梦 at Free against 国密标准's $1.99. 周公解梦 also leads on iOS requirement (7.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

周公解梦 is free to download; 国密标准 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 周公解梦 | 国密标准 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 8 months |
| Size | 19 MB | 518 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [东严 陈](https://appshunter.io/developer/453662001) | [思语 明](https://appshunter.io/developer/1522214627) |

## What reviewers say

### 周公解梦

[App page](https://appshunter.io/ios/app/2017/id1200352790)

**Features:** macOS Compatibility

**In-app purchases:** none


### 国密标准

[App page](https://appshunter.io/ios/app/id6446052244)

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

**In-app purchases:** none


## Frequently asked questions

### Is 周公解梦 free?

周公解梦 is free to download, with no in-app purchases.

### Is 国密标准 free?

国密标准 costs $1.99, with no in-app purchases.

### Do 周公解梦 or 国密标准 have ads?

Neither 周公解梦 nor 国密标准 shows ads.

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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.*