# PDF Splitter + PDF Merge vs China Key

The clearest difference is in-app purchases: China Key at none against PDF Splitter + PDF Merge's 2. PDF Splitter + PDF Merge's advantage is update cadence (every 3 months vs every 11 months) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. PDF Splitter + PDF Merge sells 2 one-off in-app purchases. China Key asks for nothing beyond the download.

PDF Splitter + PDF Merge ships an update every 3 months, China Key every 11 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | PDF Splitter + PDF Merge | China Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (140 ratings)](https://appshunter.io/ios/app/pdf-splitter-plus-pdf-merge/id651952889/reviews)** | — |
| Number of ratings | **140** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | +17 |
| Developer | [青青 余](https://appshunter.io/developer/633344484) | [MEGABEE SAL](https://appshunter.io/developer/1609910651) |

## What reviewers say

### PDF Splitter + PDF Merge

[App page](https://appshunter.io/ios/app/pdf-splitter-plus-pdf-merge/id651952889)

Easily combine multiple PDF files into a single document or extract specific pages from existing PDFs. This tool supports merging password-protected files if the password is known.

**Highlights:** Extract pages from PDF, Merge specified pages of multiple PDFs, Merge password-protected PDFs, Combine PDFs into one

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock（without restriction） | $3.99 | one-time |
| Unlock iOS without restriction | $3.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 🚀 Quick and efficient
- 🚀 Intuitive interface
- 👍 Reliable and consistent
- 👍 Excellent value for free app

**What reviewers complain about**

- 🐛 Issues with sorting/reordering files
- 🐛 Limitations on number of files
- 🔧 Outdated or basic interface design
- 💰 Requests payment after trial period

**Reported bugs**

- Corrupts text in merged PDF documents
- Paid version does not work as expected

**Requested features**

- Add page preview functionality
- Allow merging of other file types (not just PDFs)
- Improve file sorting/reordering capabilities
- Provide more customization options


### China Key

[App page](https://appshunter.io/ios/app/china-key/id6737232804)

**In-app purchases:** none


## Frequently asked questions

### Is PDF Splitter + PDF Merge free?

PDF Splitter + PDF Merge is free to download, with in-app purchases available.

### Is China Key free?

China Key is free to download, with no in-app purchases.

### Do PDF Splitter + PDF Merge or China Key have ads?

Neither PDF Splitter + PDF Merge nor China Key shows ads.

### Which is updated more often, PDF Splitter + PDF Merge or China Key?

PDF Splitter + PDF Merge ships an update every 3 months, and China Key every 11 months. Most recently, PDF Splitter + PDF Merge was updated on October 23, 2026 and China Key on October 27, 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.*