# PDF在线版 vs CAJ云阅读

The clearest difference is rating: CAJ云阅读 at 4.2 against PDF在线版's 3.5. CAJ云阅读 also leads on update cadence (every 6 days vs monthly) and ratings volume (32 vs 2). PDF在线版's advantage is in-app purchases (none vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CAJ云阅读 sells 6 in-app purchases, starting at $3.99 per month. PDF在线版 asks for nothing beyond the download.

CAJ云阅读 holds the better App Store score, 4.2 against 3.5. That said, the two scores are not equally well evidenced: CAJ云阅读 has 32 ratings behind it against 2, so its average is the more settled of the two.

PDF在线版 ships an update monthly, CAJ云阅读 every 6 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PDF在线版 | CAJ云阅读 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/pdf/id1622254371/reviews) | **[4.2 (32 ratings)](https://appshunter.io/ios/app/caj-cajviewer/id1641509083/reviews)** |
| Number of ratings | 2 | **32** |
| Positive reviews | — | 18.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | **Free** | Subscription |
| Size | 25 MB | 41 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tianjin Jinruan Tianxia Technology Co., Ltd.](https://appshunter.io/developer/1619559631) | [小花 胡](https://appshunter.io/developer/1641268208) |

## What reviewers say

### PDF在线版

[App page](https://appshunter.io/ios/app/pdf/id1622254371)

This app serves as a reader for documents encrypted using an online solution. It requires a username and password to open protected files and automatically binds to the device used for the first reading. Administrators can manage user reading permissions.

**Highlights:** Online encryption reader, Username and password protection, Device binding, User permission control, Secure document access

**Features:** macOS Compatibility

**In-app purchases:** none


### CAJ云阅读

[App page](https://appshunter.io/ios/app/caj-cajviewer/id1641509083)

This app allows users to read CAJ format documents and convert them to PDF and Word. It also supports various PDF conversion options, including to Word, Excel, PPT, and PNG, along with encryption and decryption.

**Highlights:** CAJ to PDF and Word conversion, PDF to Word, Excel, PPT, PNG conversion, PDF encryption and decryption, Import and read files, Extract text from documents, Share files easily

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 月订阅 | $3.99 | per month |
| 年订阅 | $9.99 | per year |
| 年会员 | $17.99 | per year |
| 单次购买 | $0.99 | one-time |
| 永久会员 | $14.99 | one-time |


## Frequently asked questions

### Is PDF在线版 free?

PDF在线版 is free to download, with no in-app purchases.

### Is CAJ云阅读 free?

CAJ云阅读 is free to download, with in-app purchases available.

### Which has better reviews, PDF在线版 or CAJ云阅读?

CAJ云阅读 is rated higher. PDF在线版 averages 3.5 out of 5 from 2 ratings, while CAJ云阅读 averages 4.2 from 32 ratings.

### Do PDF在线版 or CAJ云阅读 have ads?

Neither PDF在线版 nor CAJ云阅读 shows ads.

### Which is updated more often, PDF在线版 or CAJ云阅读?

PDF在线版 ships an update monthly, and CAJ云阅读 every 6 days. Most recently, PDF在线版 was updated on October 13, 2026 and CAJ云阅读 on October 17, 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.*