# OU Reader vs VDO Compress

The clearest difference is ads: OU Reader at none against VDO Compress's shown. VDO Compress's advantage is update cadence (every 9 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

OU Reader ships an update every 3 weeks, VDO Compress every 9 days. The most recent releases landed on September 30, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | OU Reader | VDO Compress |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/vdo-compress/id6760243978/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 74 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lac Viet Computing Corp.](https://appshunter.io/developer/384226609) | [KIn Wa Lin](https://appshunter.io/developer/1452963546) |

## What reviewers say

### OU Reader

[App page](https://appshunter.io/ios/app/ou-reader/id1534998101)

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

**In-app purchases:** none


### VDO Compress

[App page](https://appshunter.io/ios/app/vdo-compress/id6760243978)

This video toolkit allows you to shrink video file sizes, convert formats, and create GIFs or slideshows. It offers offline processing with guaranteed privacy, preserving HDR and 4K quality. Multiple compression methods are available, from simple presets to advanced fine-tuning.

**Highlights:** Compress video up to 80%, Convert to GIF, extract audio/images, Create photo slideshows, Offline and private processing, Supports 4K & HDR, Batch compression

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

**In-app purchases:** none


## Frequently asked questions

### Is OU Reader free?

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

### Is VDO Compress free?

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

### Do OU Reader or VDO Compress have ads?

VDO Compress shows ads; OU Reader does not.

### Which is updated more often, OU Reader or VDO Compress?

OU Reader ships an update every 3 weeks, and VDO Compress every 9 days. Most recently, OU Reader was updated on September 30, 2026 and VDO Compress on September 22, 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.*