PDF在线版 vs CAJ云阅读
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF在线版
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.
- Online encryption reader
- Username and password protection
- Device binding
- User permission control
- Secure document access
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pdf加密方案分为在线和离线两种版本，这个是在线加密方案的配套阅读器，文档创作者可以用客户端工具对文档进行加密，加密后的文档用户需要输入用户名和密码打开阅读，自动绑定用户第一次阅读的设备，您可以在后台控制用户阅读的权限。
CAJ云阅读
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.
- 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
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好用的论文献阅读器，caj格式阅读及转换！ 【CAJ转换】 一键转成PDF及Word格式，方便内容浏览、复制文字及分享文件； 【PDF转换】 支持PDF与Word、Excel、PPT、PNG等格式互转；支持PDF加密、解压、输出长图等操作。 文件方便导入和阅读，快来体验吧！ 会员订阅： 订阅价格为每年68元、每月28元、永久98元 订阅会自动续订，除非在当前期间结束前至少24小时关闭自动续订；帐户将在当前期间结束前24小时内收取续订费用，并确定续订费用 订阅可以由用户管理，并且可以在购买后转到用户的AppStore帐户设置来关闭自动续订 隐私条款：https://blog.csdn.net/m0_73431311/article/details/126521535 使用条款：https://blog.csdn.net/m0_73431311/article/details/126521610
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 June 5, 2026 and September 24, 2026 respectively.
| Parameter | PDF在线版 | CAJ云阅读 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) | 4.2 (32 ratings) — better |
| Positive reviews | — | 18.2% of reviews |
| Number of ratings | 2 | 32 — better |
| Update frequency | Monthly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 25 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Jinruan Tianxia Technology Co., Ltd. | 小花 胡 |
Customer experience
PDF在线版
CAJ云阅读
In-app purchases
PDF在线版
No in-app purchases
CAJ云阅读
- 月会员3 Days trial$3.991 Month
- 月订阅$3.991 Month
- 年订阅$9.991 Year
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- 年会员3 Days trial$17.991 Year
- 单次购买$0.99
- 永久会员$14.99
