# 签章助手 vs 盖章

The clearest difference is update cadence: 盖章 at every 4 days against 签章助手's monthly. 盖章 also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, review sentiment, ads and in-app purchases 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 and 盖章 sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

签章助手 ships an update monthly, 盖章 every 4 days. The most recent releases landed on September 3, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 签章助手 | 盖章 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 78 MB | 7 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [家芳 陶](https://appshunter.io/developer/1891660721) | [Hangzhou Niufen Network Technology Co., Ltd.](https://appshunter.io/developer/1896746554) |

## 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 |


### 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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 盖章服务 | $1.99 | per month |


## Frequently asked questions

### Is 签章助手 free?

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

### Is 盖章 free?

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

### Do 签章助手 or 盖章 have ads?

Neither 签章助手 nor 盖章 shows ads.

### Which is updated more often, 签章助手 or 盖章?

签章助手 ships an update monthly, and 盖章 every 4 days. Most recently, 签章助手 was updated on September 3, 2026 and 盖章 on September 9, 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.*