# iBunkoS vs 週刊ダイヤモンド

The clearest difference is price: 週刊ダイヤモンド at Free against iBunkoS's $2.99. 週刊ダイヤモンド also leads on iOS requirement (9.0 vs 12.0). iBunkoS's advantage is review sentiment (51% vs 10%) and in-app purchases (none vs 6). On ads and device support there is nothing between them.

週刊ダイヤモンド is free to download; iBunkoS costs $2.99 up front. 週刊ダイヤモンド sells 6 in-app purchases, starting at $4.99 per 7 days. iBunkoS asks for nothing beyond the download.

iBunkoS ships an update every 2 months, 週刊ダイヤモンド every 7 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | iBunkoS | 週刊ダイヤモンド |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/ibunkos/id418102178/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **51.2% of reviews** | 10.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Paid | — |
| Best chart rank | **#173** | — |
| Size | 34 MB | 28 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DWANGO Co., Ltd.](https://appshunter.io/developer/297539595) | [DIAMOND, Inc.](https://appshunter.io/developer/368890276) |

## What reviewers say

### iBunkoS

[App page](https://appshunter.io/ios/app/ibunkos/id418102178)

**Currently charting:** #173 Top Paid · Book (US App Store)

This app offers a realistic paper book reading experience on your iPhone, supporting various file formats like TXT, PDF, and comics. It includes features like a digital bookshelf, bookmarking with notes, and dictionary lookups.

**Highlights:** Realistic paper book interface, Supports TXT, PDF, CBZ, CBR files, 230+ built-in books and Aozora Bunko access, Customizable bookshelf and bookmarks, File transfer via USB, cloud, and servers, Dictionary lookup integration, Passcode lock for privacy

**Features:** Vision Pro support

**In-app purchases:** none


### 週刊ダイヤモンド

[App page](https://appshunter.io/ios/app/id486317533)

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 週刊ダイヤモンド | $4.99 | per 7 days |
| 週刊ダイヤモンド | $22.99 | per month |
| 週刊ダイヤモンド | $39.99 | per 2 months |
| 週刊ダイヤモンド | $59.99 | per 3 months |
| 週刊ダイヤモンド | $129.99 | per 6 months |
| 週刊ダイヤモンド | $199.99 | per year |


## Frequently asked questions

### Is iBunkoS free?

iBunkoS costs $2.99, with no in-app purchases.

### Is 週刊ダイヤモンド free?

週刊ダイヤモンド is free to download, with in-app purchases available.

### Do iBunkoS or 週刊ダイヤモンド have ads?

Neither iBunkoS nor 週刊ダイヤモンド shows ads.

### Which is updated more often, iBunkoS or 週刊ダイヤモンド?

iBunkoS ships an update every 2 months, and 週刊ダイヤモンド every 7 months. Most recently, iBunkoS was updated on October 23, 2026 and 週刊ダイヤモンド on October 23, 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.*