# ScrewBrain vs Dynamine

The clearest difference is in-app purchases: ScrewBrain at none against Dynamine's 1. ScrewBrain also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Dynamine sells 1 one-off in-app purchase. ScrewBrain asks for nothing beyond the download.

## The numbers

| Metric | ScrewBrain | Dynamine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 3 months |
| Size | 108 MB | 213 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shiyal Akash](https://appshunter.io/developer/1757806101) | [DAICHI ANDO](https://appshunter.io/developer/1838494600) |

## What reviewers say

### ScrewBrain

[App page](https://appshunter.io/ios/app/screwbrain-screw-puzzle/id6746796497)

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

**In-app purchases:** none


### Dynamine

[App page](https://appshunter.io/ios/app/dynamine-mining-upgrade/id6752258593)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is ScrewBrain free?

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

### Is Dynamine free?

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

### Do ScrewBrain or Dynamine have ads?

Both ScrewBrain and Dynamine 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.*