# Mental Boost Puzzle World vs SpoolThreStu

The clearest difference is iOS requirement: Mental Boost Puzzle World at 12.0 against SpoolThreStu's 14. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Mental Boost Puzzle World | SpoolThreStu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | — | Every 9 days |
| Size | 118 MB | 40 MB |
| Requires iOS | **12.0** | 14 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [永强 代](https://appshunter.io/developer/1866734901) | [Kamini Triparthy](https://appshunter.io/developer/1872562141) |

## What reviewers say

### Mental Boost Puzzle World

[App page](https://appshunter.io/ios/app/mental-boost-puzzle-world/id6757914384)

**Features:** macOS Compatibility

**In-app purchases:** none


### SpoolThreStu

[App page](https://appshunter.io/ios/app/spoolthrestu/id6758364404)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mental Boost Puzzle World free?

Mental Boost Puzzle World is free to download, with no in-app purchases.

### Is SpoolThreStu free?

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

### Do Mental Boost Puzzle World or SpoolThreStu have ads?

Both Mental Boost Puzzle World and SpoolThreStu 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.*