# PDF合并拆分助手 vs PDF Tools

The clearest difference is in-app purchases: PDF合并拆分助手 at none against PDF Tools's 3. PDF合并拆分助手 also leads on iOS requirement (13.0 vs 16.6). PDF Tools's advantage is update cadence (every 4 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. PDF Tools sells 3 in-app purchases, starting at $2.99 per month. PDF合并拆分助手 asks for nothing beyond the download.

PDF合并拆分助手 ships an update every 6 weeks, PDF Tools every 4 days. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | PDF合并拆分助手 | PDF Tools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Size | 78 MB | 46 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qun Cao](https://appshunter.io/developer/1655069600) | [少泽 梁](https://appshunter.io/developer/897112791) |

## What reviewers say

### PDF合并拆分助手

[App page](https://appshunter.io/ios/app/pdf-pdf/id6770174946)

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

**In-app purchases:** none


### PDF Tools

[App page](https://appshunter.io/ios/app/pdf-tools-split-merge-comp/id6787011787)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month VIP | $2.99 | per month |
| One-year membership | $4.99 | per year |
| Permanent VIP | $12.99 | one-time |


## Frequently asked questions

### Is PDF合并拆分助手 free?

PDF合并拆分助手 is free to download, with no in-app purchases.

### Is PDF Tools free?

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

### Do PDF合并拆分助手 or PDF Tools have ads?

Both PDF合并拆分助手 and PDF Tools show ads.

### Which is updated more often, PDF合并拆分助手 or PDF Tools?

PDF合并拆分助手 ships an update every 6 weeks, and PDF Tools every 4 days. Most recently, PDF合并拆分助手 was updated on September 19, 2026 and PDF Tools on September 11, 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.*