# WishingPaper vs 知几Kairos

The clearest difference is in-app purchases: 知几Kairos at none against WishingPaper's 3. 知几Kairos also leads on device support. WishingPaper's advantage is iOS requirement (15.0 vs 17.0). On price there is nothing between them.

Both are free to download. WishingPaper sells 3 one-off in-app purchases. 知几Kairos asks for nothing beyond the download.

## The numbers

| Metric | WishingPaper | 知几Kairos |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 35 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [强胜 贾](https://appshunter.io/developer/1723052785) | [algormula Pte. Ltd.](https://appshunter.io/developer/1828508832) |

## What reviewers say

### WishingPaper

[App page](https://appshunter.io/ios/app/wishingpaper/id6504904945)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 单张购买 | $0.99 | one-time |
| 五张购买 | $0.99 | one-time |
| Plus会员 | $6.99 | one-time |


### 知几Kairos

[App page](https://appshunter.io/ios/app/kairos/id6758753321)

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

**In-app purchases:** none


## Frequently asked questions

### Is WishingPaper free?

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

### Is 知几Kairos free?

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

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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.*