# Kinder vs 图片格式转换

The clearest difference is in-app purchases: Kinder at none against 图片格式转换's 1. 图片格式转换's advantage is iOS requirement (16.6 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. 图片格式转换 sells 1 one-off in-app purchase. Kinder asks for nothing beyond the download.

## The numbers

| Metric | Kinder | 图片格式转换 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 7 MB | 4 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [功亮 张](https://appshunter.io/developer/1826484363) | [涛 罗](https://appshunter.io/developer/765358386) |

## What reviewers say

### Kinder

[App page](https://appshunter.io/ios/app/kinder-ebook-reader/id6779840110)

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

**In-app purchases:** none


### 图片格式转换

[App page](https://appshunter.io/ios/app/id6809106324)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 图片格式转换  专业版 | $3.99 | one-time |


## Frequently asked questions

### Is Kinder free?

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

### Is 图片格式转换 free?

图片格式转换 is free to download, with in-app purchases available.

### Do Kinder or 图片格式转换 have ads?

Neither Kinder nor 图片格式转换 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.*