# BookBubble vs CozyShelf

The clearest difference is in-app purchases: BookBubble at none against CozyShelf's 2. BookBubble also leads on review sentiment (100% vs 75%). CozyShelf's advantage is update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CozyShelf sells 2 in-app purchases, starting at $4.99 per month. BookBubble asks for nothing beyond the download.

BookBubble ships an update monthly, CozyShelf every 3 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | BookBubble | CozyShelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (7 ratings)](https://appshunter.io/ios/app/cozyshelf-book-tracker/id6773593941/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 60 MB | 13 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 9+ |
| Developer | [Timon Grassl](https://appshunter.io/developer/1825651216) | [Joanna Leslie](https://appshunter.io/developer/6773593943) |

## What reviewers say

### BookBubble

[App page](https://appshunter.io/ios/app/bookbubble/id6748405667)

This app provides a spoiler-free wiki for books, unlocking information chapter by chapter as you read. It also helps you track reading sessions, organize your library, and set reading goals to build a consistent habit.

**Highlights:** Spoiler-free fan wiki, Chapter-by-chapter entry unlocking, Reading session tracking, Ambient reading music, Customizable book library, Reading goal setting, Calendar view of reading habits

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

**In-app purchases:** none


### CozyShelf

[App page](https://appshunter.io/ios/app/cozyshelf-book-tracker/id6773593941)

Track your reading progress, log your feelings about books, and discover your next read with curated ambiences. Organize your library, set reading goals, and visualize your year in books.

**Highlights:** Series tracking with reading order, Blind Date with TBR feature, Mood and feeling logging, Customizable reading ambiences, Import from Goodreads, StoryGraph, Kobo, Reading stats and calendar, Pro features: custom shelves, reading timer

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly: Shelves & Stats | $4.99 | per month |
| Pro Annual: Shelves & Stats | $34.99 | per year |


## Frequently asked questions

### Is BookBubble free?

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

### Is CozyShelf free?

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

### Do BookBubble or CozyShelf have ads?

Neither BookBubble nor CozyShelf shows ads.

### Which is updated more often, BookBubble or CozyShelf?

BookBubble ships an update monthly, and CozyShelf every 3 days. Most recently, BookBubble was updated on November 5, 2026 and CozyShelf on November 5, 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.*