# PDF Stamp & Seam Stamp & Sign vs 外贸单证软件

The clearest difference is device support: PDF Stamp & Seam Stamp & Sign at 4 against 外贸单证软件's 2. 外贸单证软件's advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. PDF Stamp & Seam Stamp & Sign sells 3 in-app purchases, starting at $3.99 per month and 外贸单证软件 sells 3 in-app purchases, starting at $59.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PDF Stamp & Seam Stamp & Sign | 外贸单证软件 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 27 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hangzhou Niufen Network Technology Co., Ltd](https://appshunter.io/developer/1896746554) | [Chongqing Xinlianyu Technology Co., Ltd.](https://appshunter.io/developer/1399388066) |

## What reviewers say

### PDF Stamp & Seam Stamp & Sign

[App page](https://appshunter.io/ios/app/pdf-stamp-and-seam-stamp-and-sign/id6775122604)

Easily add stamps and handwritten electronic signatures to PDF documents. Process contracts and agreements efficiently without printing or scanning, keeping your data secure locally on your device.

**Highlights:** Smart PDF stamping, Across-page seal generation, Handwritten electronic signatures, Batch stamping and signing, Local data processing, Seamless document import/export

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| E‑Stamp Service | $3.99 | per month |
| 盖章年卡 | $9.99 | per year |
| 无纸盖章永久版 | $14.99 | one-time |


### 外贸单证软件

[App page](https://appshunter.io/ios/app/id6784163400)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小微版 | $59.99 | per year |
| 标准版 | $99.99 | per year |
| 尊享版 | $179.99 | per year |


## Frequently asked questions

### Is PDF Stamp & Seam Stamp & Sign free?

PDF Stamp & Seam Stamp & Sign is free to download, with in-app purchases available.

### Is 外贸单证软件 free?

外贸单证软件 is free to download, with in-app purchases available.

### Do PDF Stamp & Seam Stamp & Sign or 外贸单证软件 have ads?

Neither PDF Stamp & Seam Stamp & Sign nor 外贸单证软件 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.*