# PDF在线版 vs 绵眠

The clearest difference is update cadence: PDF在线版 at monthly against 绵眠's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PDF在线版 ships an update monthly, 绵眠 every 3 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PDF在线版 | 绵眠 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/pdf/id1622254371/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 25 MB | 133 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) | [Shanghai Qianfenzhiyi Information Technology Co., Ltd.](https://appshunter.io/developer/1701362512) |

## 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


### 绵眠

[App page](https://appshunter.io/ios/app/id6470334085)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF在线版 free?

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

### Is 绵眠 free?

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

### Do PDF在线版 or 绵眠 have ads?

Neither PDF在线版 nor 绵眠 shows ads.

### Which is updated more often, PDF在线版 or 绵眠?

PDF在线版 ships an update monthly, and 绵眠 every 3 months. Most recently, PDF在线版 was updated on October 13, 2026 and 绵眠 on October 14, 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.*