# ReadingTreee vs Cat's Library

The clearest difference is update cadence: Cat's Library at every 4 days against ReadingTreee's monthly. Cat's Library also leads on review sentiment (87% vs 63%) and rating (4.8 vs 4.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. ReadingTreee sells 2 one-off in-app purchases and Cat's Library sells 7 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Cat's Library holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 39 and 42 respectively. Written reviews point the same way: 63% of ReadingTreee's written reviews are positive against 87% of Cat's Library's.

ReadingTreee ships an update monthly, Cat's Library every 4 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ReadingTreee | Cat's Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (39 ratings)](https://appshunter.io/ios/app/readingtreee/id1506021475/reviews) | **[4.8 (42 ratings)](https://appshunter.io/ios/app/cats-library-book-tracker/id6752113848/reviews)** |
| Number of ratings | 39 | **42** |
| Positive reviews | 62.5% of reviews | **86.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 43 MB | 222 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [byeonghoon seo](https://appshunter.io/developer/1772278977) | [Lo-Fi Labs Inc.](https://appshunter.io/developer/6796905768) |

## What reviewers say

### ReadingTreee

[App page](https://appshunter.io/ios/app/readingtreee/id1506021475)

This app helps you cultivate a reading habit by visually tracking your progress and organizing your book collection. It allows you to manage reading statuses, create notes, and watch your personal reading tree grow as you read more.

**Highlights:** Manage reading status (Currently Reading, Want to Read, Finished), Reading tree growth system, Book search and barcode registration, Create and save reading notes, Intuitive and charming UI, Reading statistics screen

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 leaf | $0.29 | one-time |
| 20 leaf | $0.49 | one-time |


### Cat's Library

[App page](https://appshunter.io/ios/app/cats-library-book-tracker/id6752113848)

Enhance your reading with adorable cats! Track your progress, organize your personal library, and collect favorite quotes. This app offers a unique, motivating, and healing reading experience.

**Highlights:** Read with cats and a reading timer, Organize books into To Read, Currently Reading, Read, Convenient book registration (search, manual, barcode), Collect and save favorite quotes with OCR, Track reading progress and history, Monthly reading activity calendar

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Book Butler Monthly Sub | $4.99 | per month |
| Pro Book Butler Annual Subscription | $29.99 | per year |
| Pro Book Butler Annual Subscription | $29.99 | per year |
| Coin Pack - 100 | $1.49 | one-time |
| Coin Pack - 500 | $6.49 | one-time |
| Coin Pack - 1000 | $9.99 | one-time |
| Pro Book Butler Lifetime Subs | $79.99 | one-time |


## Frequently asked questions

### Is ReadingTreee free?

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

### Is Cat's Library free?

Cat's Library is free to download, with in-app purchases available.

### Which has better reviews, ReadingTreee or Cat's Library?

Cat's Library is rated higher. ReadingTreee averages 4.6 out of 5 from 39 ratings, while Cat's Library averages 4.8 from 42 ratings.

### Do ReadingTreee or Cat's Library have ads?

Both ReadingTreee and Cat's Library show ads.

### Which is updated more often, ReadingTreee or Cat's Library?

ReadingTreee ships an update monthly, and Cat's Library every 4 days. Most recently, ReadingTreee was updated on October 17, 2026 and Cat's Library on October 16, 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.*