# 照片尺寸修改 vs 盖章

The clearest difference is in-app purchases: 照片尺寸修改 at none against 盖章's 2. 照片尺寸修改 also leads on update cadence (every 2 days vs every 5 days). 盖章's advantage is ads (none vs shown) and device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. 盖章 sells 2 in-app purchases, starting at $2.99 per month. 照片尺寸修改 asks for nothing beyond the download.

照片尺寸修改 ships an update every 2 days, 盖章 every 5 days. The most recent releases landed on September 14, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 照片尺寸修改 | 盖章 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 7 MB |
| Requires iOS | 16 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [子幸 聂](https://appshunter.io/developer/1881766687) | [Hangzhou Niufen Network Technology Co., Ltd.](https://appshunter.io/developer/1896746554) |

## What reviewers say

### 照片尺寸修改

[App page](https://appshunter.io/ios/app/id6760887739)

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

**In-app purchases:** none


### 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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| E‑Stamp Service | $2.99 | per month |
| 无纸盖章永久版 | $9.99 | one-time |


## Frequently asked questions

### Is 照片尺寸修改 free?

照片尺寸修改 is free to download, with no in-app purchases.

### Is 盖章 free?

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

### Do 照片尺寸修改 or 盖章 have ads?

照片尺寸修改 shows ads; 盖章 does not.

### Which is updated more often, 照片尺寸修改 or 盖章?

照片尺寸修改 ships an update every 2 days, and 盖章 every 5 days. Most recently, 照片尺寸修改 was updated on September 14, 2026 and 盖章 on September 28, 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.*