# 公主游戏® vs KnowClock

The clearest difference is in-app purchases: 公主游戏® at none against KnowClock's 3. 公主游戏® also leads on iOS requirement (5.1.1 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. KnowClock sells 3 in-app purchases, starting at $0.99 per month. 公主游戏® asks for nothing beyond the download.

## The numbers

| Metric | 公主游戏® | KnowClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 98 MB | 11 MB |
| Requires iOS | **5.1.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [宇 郑](https://appshunter.io/developer/983597538) | [中周 王](https://appshunter.io/developer/1611287450) |

## What reviewers say

### 公主游戏®

[App page](https://appshunter.io/ios/app/id1206862610)

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

**In-app purchases:** none


### KnowClock

[App page](https://appshunter.io/ios/app/knowclock-kids-clock/id6765656447)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月订阅 | $0.99 | per month |
| 年订阅 | $2.99 | per year |
| 终身解锁 | $4.99 | one-time |


## Frequently asked questions

### Is 公主游戏® free?

公主游戏® is free to download, with no in-app purchases.

### Is KnowClock free?

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

### Do 公主游戏® or KnowClock have ads?

Neither 公主游戏® nor KnowClock 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.*