# Book vs ShelfSweep

The clearest difference is in-app purchases: Book at none against ShelfSweep's 1. ShelfSweep's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. ShelfSweep sells 1 one-off in-app purchase. Book asks for nothing beyond the download.

## The numbers

| Metric | Book | ShelfSweep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Size | 1 MB | 6 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Maren Bellamy](https://appshunter.io/developer/1887168890) | [Hainan Weixia Software Development Co., Ltd.](https://appshunter.io/developer/1895035652) |

## What reviewers say

### Book

[App page](https://appshunter.io/ios/app/book-train-your-knowledge/id6760989511)

**In-app purchases:** none


### ShelfSweep

[App page](https://appshunter.io/ios/app/shelfsweep-book-catalog/id6792236587)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShelfSweep Pro Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is Book free?

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

### Is ShelfSweep free?

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

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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.*