# threeThingsZero vs Shelf Shuffle

The clearest difference is in-app purchases: threeThingsZero at none against Shelf Shuffle's 2. threeThingsZero also leads on iOS requirement (14.0 vs 17.0). Shelf Shuffle's advantage is device support. On price there is nothing between them.

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

## The numbers

| Metric | threeThingsZero | Shelf Shuffle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 2 weeks |
| Size | 5 MB | 26 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [公亮 中村](https://appshunter.io/developer/1835186149) | [Hatching Point LLC](https://appshunter.io/developer/1860158157) |

## What reviewers say

### threeThingsZero

[App page](https://appshunter.io/ios/app/threethingszero/id6753323685)

**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 threeThingsZero free?

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

### Is Shelf Shuffle free?

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

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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.*