# Lucid Reader vs 青の書架

The clearest difference is ads: Lucid Reader at none against 青の書架's shown. Lucid Reader also leads on update cadence (fortnightly vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Lucid Reader sells 1 one-off in-app purchase and 青の書架 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Lucid Reader ships an update fortnightly, 青の書架 every 2 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Lucid Reader | 青の書架 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 7 MB | 35 MB |
| Requires iOS | 17.0 | 17 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Satoshi Takezawa](https://appshunter.io/developer/1677095481) | [Ayumu Izumi](https://appshunter.io/developer/1822273057) |

## What reviewers say

### Lucid Reader

[App page](https://appshunter.io/ios/app/lucid-reader/id6446276548)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Mode | $0.99 | one-time |


### 青の書架

[App page](https://appshunter.io/ios/app/id6754846395)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $2.99 | one-time |


## Frequently asked questions

### Is Lucid Reader free?

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

### Is 青の書架 free?

青の書架 is free to download, with in-app purchases available.

### Do Lucid Reader or 青の書架 have ads?

青の書架 shows ads; Lucid Reader does not.

### Which is updated more often, Lucid Reader or 青の書架?

Lucid Reader ships an update fortnightly, and 青の書架 every 2 months. Most recently, Lucid Reader was updated on October 24, 2026 and 青の書架 on October 26, 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.*