# Gemfall Stack Master vs Block Defense

The clearest difference is iOS requirement: Block Defense at 13.0 against Gemfall Stack Master'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 | Gemfall Stack Master | Block Defense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | — | Every 2 months |
| Size | 13 MB | 107 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dat Tran Dinh](https://appshunter.io/developer/1894787846) | [Zorvyn Myxthirn Falkthorpe](https://appshunter.io/developer/6792965832) |

## What reviewers say

### Gemfall Stack Master

[App page](https://appshunter.io/ios/app/gemfall-stack-master/id6773622012)

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

**In-app purchases:** none


### Block Defense

[App page](https://appshunter.io/ios/app/block-defense-tower-war/id6792978108)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gemfall Stack Master free?

Gemfall Stack Master is free to download, with no in-app purchases.

### Is Block Defense free?

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

### Do Gemfall Stack Master or Block Defense have ads?

Both Gemfall Stack Master and Block Defense 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.*