# bookend vs きくPDF

The clearest difference is update cadence: きくPDF at every 4 days against bookend's monthly. bookend's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. bookend sells 10 one-off in-app purchases and きくPDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

bookend ships an update monthly, きくPDF every 4 days. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | bookend | きくPDF |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 59 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [iDoc K.K.](https://appshunter.io/developer/410797244) | [Nue K.K.](https://appshunter.io/developer/1892031710) |

## 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 |


### きくPDF

[App page](https://appshunter.io/ios/app/pdf-pdf/id6819943736)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全機能のアンロック | $5.99 | one-time |


## Frequently asked questions

### Is bookend free?

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

### Is きくPDF free?

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

### Do bookend or きくPDF have ads?

Neither bookend nor きくPDF shows ads.

### Which is updated more often, bookend or きくPDF?

bookend ships an update monthly, and きくPDF every 4 days. Most recently, bookend was updated on November 6, 2026 and きくPDF on November 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.*