# Book! Book! Book! Daily Reader vs ShelfMark

The clearest difference is in-app purchases: Book! Book! Book! Daily Reader at none against ShelfMark's 1. Book! Book! Book! Daily Reader also leads on iOS requirement (16.4 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

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

Book! Book! Book! Daily Reader ships an update every 4 days, ShelfMark weekly. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Book! Book! Book! Daily Reader | ShelfMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Size | 44 MB | 6 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [hyunho Kim](https://appshunter.io/developer/1873769250) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Book! Book! Book! Daily Reader

[App page](https://appshunter.io/ios/app/book-book-book-daily-reader/id6779088552)

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

**In-app purchases:** none


### ShelfMark

[App page](https://appshunter.io/ios/app/shelfmark-reading-tracker/id6788129809)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShelfMark Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Book! Book! Book! Daily Reader free?

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

### Is ShelfMark free?

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

### Do Book! Book! Book! Daily Reader or ShelfMark have ads?

Neither Book! Book! Book! Daily Reader nor ShelfMark shows ads.

### Which is updated more often, Book! Book! Book! Daily Reader or ShelfMark?

Book! Book! Book! Daily Reader ships an update every 4 days, and ShelfMark weekly. Most recently, Book! Book! Book! Daily Reader was updated on September 9, 2026 and ShelfMark on September 15, 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.*