# Clack Duel vs Shelf Shuffle

The clearest difference is in-app purchases: Clack Duel at none against Shelf Shuffle's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shelf Shuffle sells 2 in-app purchases, starting at $0.99 per 7 days. Clack Duel asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 8, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Clack Duel | Shelf Shuffle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 197 MB | 26 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Sehee Min](https://appshunter.io/developer/6796346591) | [Hatching Point LLC](https://appshunter.io/developer/1860158157) |

## What reviewers say

### Clack Duel

[App page](https://appshunter.io/ios/app/clack-duel/id6780315192)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shelf Shuffle

[App page](https://appshunter.io/ios/app/shelf-shuffle/id6795345847)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $0.99 | per 7 days |
| Yearly Premium | $19.99 | per year |


## Frequently asked questions

### Is Clack Duel free?

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

### Is Shelf Shuffle free?

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

### Do Clack Duel or Shelf Shuffle have ads?

Both Clack Duel and Shelf Shuffle show ads.

### Which is updated more often, Clack Duel or Shelf Shuffle?

Clack Duel ships an update every 2 weeks, and Shelf Shuffle every 2 weeks. Most recently, Clack Duel was updated on October 8, 2026 and Shelf Shuffle on October 20, 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.*