# Stackle Topics vs Book Sort

The clearest difference is in-app purchases: Stackle Topics at none against Book Sort's 1. Book Sort's advantage is iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Stackle Topics | Book Sort |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (10 ratings)](https://appshunter.io/ios/app/book-sort-shelf-puzzle/id6801528356/reviews)** |
| Number of ratings | — | **10** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | — |
| Monetization | — | Free with in-app purchases |
| Size | 77 MB | 178 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mezze](https://appshunter.io/developer/1882445692) | [Igor Chetrus](https://appshunter.io/developer/1562661724) |

## What reviewers say

### Stackle Topics

[App page](https://appshunter.io/ios/app/stackle-topics/id6790752245)

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

**In-app purchases:** none


### Book Sort

[App page](https://appshunter.io/ios/app/book-sort-shelf-puzzle/id6801528356)

Organize colorful books on a shelf by sorting them into their correct color groups. Strategically plan your moves to uncover hidden books and complete each level within a limited number of turns. Utilize helpful boosters like Undo and Joker to overcome challenges.

**Highlights:** Color-based book sorting, Hidden books and strategic moves, Limited moves per level, Crown book starting mechanic, Undo and Joker boosters, Increasingly challenging levels, Relaxing puzzle gameplay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $9.99 | one-time |


## Frequently asked questions

### Is Stackle Topics free?

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

### Is Book Sort free?

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

### Do Stackle Topics or Book Sort have ads?

Both Stackle Topics and Book Sort show ads.

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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.*