# カラクリBOOKS vs 読書尚友

The clearest difference is in-app purchases: カラクリBOOKS at none against 読書尚友's 1. カラクリBOOKS also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). 読書尚友's advantage is update cadence (every 2 weeks vs every 2 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. 読書尚友 sells 1 one-off in-app purchase. カラクリBOOKS asks for nothing beyond the download.

カラクリBOOKS ships an update every 2 months, 読書尚友 every 2 weeks. The most recent releases landed on November 7, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | カラクリBOOKS | 読書尚友 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id1579254502/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 184 MB | 45 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [潔 筒井](https://appshunter.io/developer/363096327) | [hishida](https://appshunter.io/developer/314082596) |

## What reviewers say

### カラクリBOOKS

[App page](https://appshunter.io/ios/app/books/id1507097522)

**Features:** macOS Compatibility

**In-app purchases:** none


### 読書尚友

[App page](https://appshunter.io/ios/app/id1579254502)

This app is a Japanese vertical text viewer for iOS, offering access to over 10,000 works from Aozora Bunko and supporting local files. It handles various formats and provides customization options for a comfortable reading experience.

**Highlights:** Supports various file formats (text, HTML, PDF, ePub, images, etc.), Automatic character code detection, Browse Aozora Bunko by author, title, genre, and ranking, Download books directly from Aozora Bunko, Customizable font, size, background, and page direction, In-app search and bookmarking

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除 | $1.99 | one-time |


## Frequently asked questions

### Is カラクリBOOKS free?

カラクリBOOKS is free to download, with no in-app purchases.

### Is 読書尚友 free?

読書尚友 is free to download, with in-app purchases available.

### Do カラクリBOOKS or 読書尚友 have ads?

読書尚友 shows ads; カラクリBOOKS does not.

### Which is updated more often, カラクリBOOKS or 読書尚友?

カラクリBOOKS ships an update every 2 months, and 読書尚友 every 2 weeks. Most recently, カラクリBOOKS was updated on November 7, 2026 and 読書尚友 on November 11, 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.*