# 签章助手 vs 扫描奶臭王

The clearest difference is in-app purchases: 扫描奶臭王 at none against 签章助手's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 签章助手 sells 3 in-app purchases, starting at $3.99 per 7 days. 扫描奶臭王 asks for nothing beyond the download.

## The numbers

| Metric | 签章助手 | 扫描奶臭王 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [家芳 陶](https://appshunter.io/developer/1891660721) | [语婷 张](https://appshunter.io/developer/1882916238) |

## What reviewers say

### 签章助手

[App page](https://appshunter.io/ios/app/pdf/id6762083508)

This tool allows users to easily add stamps and signatures to PDF documents. It supports various stamp types, including contract and cross-page seals, and allows for flexible placement and resizing. Once applied, stamps and signatures are permanently embedded into the PDF for secure sharing and archiving.

**Highlights:** Add stamps and signatures to PDFs, Supports contract and cross-page seals, Drag, rotate, and resize elements, Multi-page document processing, Embeds stamps/signatures into exported PDFs, Local storage for security

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day VIP (unlock all) | $3.99 | per 7 days |
| 7days | $3.99 | one-time |
| lifetime | $19.99 | one-time |


### 扫描奶臭王

[App page](https://appshunter.io/ios/app/id6779693209)

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

**In-app purchases:** none


## Frequently asked questions

### Is 签章助手 free?

签章助手 is free to download, with in-app purchases available.

### Is 扫描奶臭王 free?

扫描奶臭王 is free to download, with no in-app purchases.

### Do 签章助手 or 扫描奶臭王 have ads?

Neither 签章助手 nor 扫描奶臭王 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.*