# 隐藏式行车记录仪 vs PDF转换器

The clearest difference is in-app purchases: 隐藏式行车记录仪 at none against PDF转换器's 3. 隐藏式行车记录仪 also leads on iOS requirement (7.0 vs 12.4). On price, ads and device support there is nothing between them.

Both are free to download. PDF转换器 sells 3 in-app purchases, starting at $2.99 per month. 隐藏式行车记录仪 asks for nothing beyond the download.

## The numbers

| Metric | 隐藏式行车记录仪 | PDF转换器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 27 MB | 17 MB |
| Requires iOS | **7.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [lanfeng wu](https://appshunter.io/developer/1036131280) | [Shanghai Hongtai Trading Co., Ltd.](https://appshunter.io/developer/1634567281) |

## What reviewers say

### 隐藏式行车记录仪

[App page](https://appshunter.io/ios/app/id1031235963)

**In-app purchases:** none


### PDF转换器

[App page](https://appshunter.io/ios/app/pdf-pdf/id6469493796)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF转换器-各种文档格式互转月会员 | $2.99 | per month |
| PDF转换器-各种文档格式互转年会员 | $24.99 | per year |
| PDF转换器-各种文档格式互转永久会员 | $39.99 | one-time |


## Frequently asked questions

### Is 隐藏式行车记录仪 free?

隐藏式行车记录仪 is free to download, with no in-app purchases.

### Is PDF转换器 free?

PDF转换器 is free to download, with in-app purchases available.

### Do 隐藏式行车记录仪 or PDF转换器 have ads?

Neither 隐藏式行车记录仪 nor PDF转换器 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.*