# bookend vs KaLib

The clearest difference is in-app purchases: KaLib at none against bookend's 10. KaLib also leads on iOS requirement (11.0 vs 15.6). bookend's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. bookend sells 10 one-off in-app purchases. KaLib asks for nothing beyond the download.

bookend ships an update monthly, KaLib every 2 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | bookend | KaLib |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 25 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [iDoc K.K.](https://appshunter.io/developer/410797244) | [Kyorinsha Co.,Ltd](https://appshunter.io/developer/482525161) |

## What reviewers say

### bookend

[App page](https://appshunter.io/ios/app/bookend/id410797241)

This app offers a beautiful and intuitive reading experience for purchased digital books on iPad and iPhone. It allows for easy navigation, page turning, and zooming, with cloud syncing for content across devices. Discover and enjoy a growing library of digital content.

**Highlights:** Beautiful, easy-to-use interface, Cloud Library for syncing across devices, Easy flick to turn pages, Portrait and landscape reading modes, Thumbnail view for quick navigation, Pinch and zoom pages, Bookshelf view with bibliographic data

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 神話から読み、知る日本の神様 | $11.99 | one-time |
| 大川功　人間の魅力 | $11.99 | one-time |
| 読む餃子 | $11.99 | one-time |
| 面白くてよくわかる！ 太平洋戦争 | $11.99 | one-time |
| 面白くてよくわかる！ 古事記 | $11.99 | one-time |
| 保存版 上野・谷根千を極める！ | $11.99 | one-time |
| 保存版 横浜・中華街を極める！ | $11.99 | one-time |
| 40代を素敵にしなやかに生きるシンプルセオリー | $11.99 | one-time |
| 今日もごちそうさまでした | $11.99 | one-time |
| 妄想男子 － 佐藤歩×田中大地 写真集 | $13.99 | one-time |


### KaLib

[App page](https://appshunter.io/ios/app/kalib/id482525158)

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

**In-app purchases:** none


## Frequently asked questions

### Is bookend free?

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

### Is KaLib free?

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

### Do bookend or KaLib have ads?

Neither bookend nor KaLib shows ads.

### Which is updated more often, bookend or KaLib?

bookend ships an update monthly, and KaLib every 2 months. Most recently, bookend was updated on October 20, 2026 and KaLib on October 6, 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.*