# 盖章 vs 外贸单据工作台

The clearest difference is in-app purchases: 外贸单据工作台 at none against 盖章's 3. 外贸单据工作台 also leads on update cadence (every 3 days vs weekly). 盖章's advantage is device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 盖章 sells 3 in-app purchases, starting at $3.99 per month. 外贸单据工作台 asks for nothing beyond the download.

盖章 ships an update weekly, 外贸单据工作台 every 3 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 盖章 | 外贸单据工作台 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 0 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Niufen Network Technology Co., Ltd.](https://appshunter.io/developer/1896746554) | [爱龙 夏](https://appshunter.io/developer/1676873003) |

## What reviewers say

### 盖章

[App page](https://appshunter.io/ios/app/e-stamp/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 |


### 外贸单据工作台

[App page](https://appshunter.io/ios/app/id6780213203)

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

**In-app purchases:** none


## Frequently asked questions

### Is 盖章 free?

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

### Is 外贸单据工作台 free?

外贸单据工作台 is free to download, with no in-app purchases.

### Do 盖章 or 外贸单据工作台 have ads?

Neither 盖章 nor 外贸单据工作台 shows ads.

### Which is updated more often, 盖章 or 外贸单据工作台?

盖章 ships an update weekly, and 外贸单据工作台 every 3 days. Most recently, 盖章 was updated on October 24, 2026 and 外贸单据工作台 on October 19, 2026.

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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.*