# Screw Sort Puzzle! vs Knowledge Millionaire

The clearest difference is in-app purchases: Screw Sort Puzzle! at none against Knowledge Millionaire's 4. Screw Sort Puzzle! also leads on iOS requirement (15.0 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. Knowledge Millionaire sells 4 one-off in-app purchases. Screw Sort Puzzle! asks for nothing beyond the download.

## The numbers

| Metric | Screw Sort Puzzle! | Knowledge Millionaire |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | — |
| Size | 177 MB | 20 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Kaliba Games & Technologies Inc.](https://appshunter.io/developer/1549023239) | [Louis Saks](https://appshunter.io/developer/1866998868) |

## What reviewers say

### Screw Sort Puzzle!

[App page](https://appshunter.io/ios/app/screw-sort-puzzle/id6593659531)

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

**In-app purchases:** none


### Knowledge Millionaire

[App page](https://appshunter.io/ios/app/knowledge-millionaire/id6762064395)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $0.99 | one-time |
| 500 Coins | $3.99 | one-time |
| 1000 Coins | $5.99 | one-time |
| 5000 Coins | $17.99 | one-time |


## Frequently asked questions

### Is Screw Sort Puzzle! free?

Screw Sort Puzzle! is free to download, with no in-app purchases.

### Is Knowledge Millionaire free?

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

### Do Screw Sort Puzzle! or Knowledge Millionaire have ads?

Both Screw Sort Puzzle! and Knowledge Millionaire 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.*