# 文化中油 vs Koodo Reader

The clearest difference is in-app purchases: 文化中油 at none against Koodo Reader's 2. 文化中油 also leads on iOS requirement (13.0 vs 15.5). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Koodo Reader sells 2 one-off in-app purchases. 文化中油 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 文化中油 | Koodo Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (5 ratings)](https://appshunter.io/ios/app/koodo-reader/id6744887779/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 80.0% of reviews | **82.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | — | Free |
| Size | 90 MB | 72 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [石油工业出版社](https://appshunter.io/developer/1019225064) | [亮 郭](https://appshunter.io/developer/1803973300) |

## What reviewers say

### 文化中油

[App page](https://appshunter.io/ios/app/id1377992082)

**Features:** Vision Pro support

**In-app purchases:** none


### Koodo Reader

[App page](https://appshunter.io/ios/app/koodo-reader/id6744887779)

Manage and read your local e-books with a powerful reader supporting numerous formats. Seamlessly integrate with cloud storage and NAS for cross-platform access. Customize your reading experience with adjustable fonts, themes, and optimized layouts.

**Highlights:** Broad e-book format support, Cloud and NAS integration, Cross-device library sync, Customizable reading interface, AI-powered dictionary and translation, Night mode and multiple themes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 million Character Quota | $4.99 | one-time |
| Koodo Reader Pro (1 Year) | $5.99 | one-time |


## Frequently asked questions

### Is 文化中油 free?

文化中油 is free to download, with no in-app purchases.

### Is Koodo Reader free?

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

### Do 文化中油 or Koodo Reader have ads?

Neither 文化中油 nor Koodo Reader shows ads.

### Which is updated more often, 文化中油 or Koodo Reader?

文化中油 ships an update monthly, and Koodo Reader monthly. Most recently, 文化中油 was updated on October 15, 2026 and Koodo Reader on October 16, 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.*