# Tower Stack Challenge vs Screw to Shape

The clearest difference is iOS requirement: Screw to Shape at 12.0 against Tower Stack Challenge's 15.0. 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 | Tower Stack Challenge | Screw to Shape |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | — |
| Size | 254 MB | 99 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KAKAK](https://appshunter.io/developer/1501395145) | [MOBMONKS IT SOLUTIONS](https://appshunter.io/developer/1457607034) |

## What reviewers say

### Tower Stack Challenge

[App page](https://appshunter.io/ios/app/tower-stack-challenge/id6737799812)

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

**In-app purchases:** none


### Screw to Shape

[App page](https://appshunter.io/ios/app/screw-to-shape/id6739965569)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tower Stack Challenge free?

Tower Stack Challenge is free to download, with no in-app purchases.

### Is Screw to Shape free?

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

### Do Tower Stack Challenge or Screw to Shape have ads?

Both Tower Stack Challenge and Screw to Shape 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.*