# 青空文庫ビューア vs 青空EPUB

The clearest difference is ads: 青空EPUB at none against 青空文庫ビューア's shown. 青空EPUB also leads on update cadence (daily vs every 6 days). 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.

青空文庫ビューア ships an update every 6 days, 青空EPUB daily. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 青空文庫ビューア | 青空EPUB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 days | **Daily** |
| Size | 61 MB | 21 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Toshihiro Yagi](https://appshunter.io/developer/6806920568) | [Tsutomu Kondo](https://appshunter.io/developer/6807793626) |

## What reviewers say

### 青空文庫ビューア

[App page](https://appshunter.io/ios/app/id6806920566)

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

**In-app purchases:** none


### 青空EPUB

[App page](https://appshunter.io/ios/app/epub/id6807793624)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 青空文庫ビューア free?

青空文庫ビューア is free to download, with no in-app purchases.

### Is 青空EPUB free?

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

### Do 青空文庫ビューア or 青空EPUB have ads?

青空文庫ビューア shows ads; 青空EPUB does not.

### Which is updated more often, 青空文庫ビューア or 青空EPUB?

青空文庫ビューア ships an update every 6 days, and 青空EPUB daily. Most recently, 青空文庫ビューア was updated on October 17, 2026 and 青空EPUB on October 1, 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.*