# Book vs OnShelf

The clearest difference is ads: OnShelf at none against Book's shown. OnShelf also leads on update cadence (every 2 weeks vs every 6 months). Book's advantage is iOS requirement (15.1 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Book sells 1 one-off in-app purchase and OnShelf sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Book ships an update every 6 months, OnShelf every 2 weeks. The most recent releases landed on September 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Book | OnShelf |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 60 MB | 6 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [TATSUO NAKANO](https://appshunter.io/developer/1846200191) | [Ruben Gonzalez](https://appshunter.io/developer/1885517252) |

## What reviewers say

### Book

[App page](https://appshunter.io/ios/app/book-lifecycle-manager/id6757215528)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


### OnShelf

[App page](https://appshunter.io/ios/app/onshelf/id6760916697)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnShelf Premium | $0.99 | one-time |


## Frequently asked questions

### Is Book free?

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

### Is OnShelf free?

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

### Do Book or OnShelf have ads?

Book shows ads; OnShelf does not.

### Which is updated more often, Book or OnShelf?

Book ships an update every 6 months, and OnShelf every 2 weeks. Most recently, Book was updated on September 24, 2026 and OnShelf on October 9, 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.*