# OCS云阅读 vs ListenPDF

The clearest difference is in-app purchases: OCS云阅读 at none against ListenPDF's 1. OCS云阅读 also leads on iOS requirement (9.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. ListenPDF sells 1 one-off in-app purchase. OCS云阅读 asks for nothing beyond the download.

## The numbers

| Metric | OCS云阅读 | ListenPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 30 MB | 18 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luoyang Jianbiao Library Network Technology Co., Ltd.](https://appshunter.io/developer/1460554486) | [Infinity Inc.](https://appshunter.io/developer/1680741877) |

## What reviewers say

### OCS云阅读

[App page](https://appshunter.io/ios/app/ocs/id1532693137)

**Features:** macOS Compatibility

**In-app purchases:** none


### ListenPDF

[App page](https://appshunter.io/ios/app/listenpdf/id6740225647)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $4.99 | one-time |


## Frequently asked questions

### Is OCS云阅读 free?

OCS云阅读 is free to download, with no in-app purchases.

### Is ListenPDF free?

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

### Do OCS云阅读 or ListenPDF have ads?

Neither OCS云阅读 nor ListenPDF shows ads.

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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.*