# KeyQ Cosmic Defender vs Block Master Hall

The clearest difference is ads: KeyQ Cosmic Defender at none against Block Master Hall's shown. Block Master Hall's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price and in-app purchases 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 | KeyQ Cosmic Defender | Block Master Hall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/block-master-hall/id6758379959/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Daily | — |
| Monetization | — | Ad-supported |
| Size | 18 MB | 143 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KeyQ, Inc.](https://appshunter.io/developer/1508673206) | [Hundred Years Limited](https://appshunter.io/developer/1435045700) |

## What reviewers say

### KeyQ Cosmic Defender

[App page](https://appshunter.io/ios/app/keyq-cosmic-defender/id6752604812)

**Features:** macOS Compatibility

**In-app purchases:** none


### Block Master Hall

[App page](https://appshunter.io/ios/app/block-master-hall/id6758379959)

This classic block puzzle game features a 9x9 grid where matching blocks clears lines and squares. Unlock beautiful art collections by achieving high scores and completing special puzzle fragments. Enjoy a relaxing, timer-free experience designed to sharpen your mind.

**Highlights:** 9x9 grid strategy, Classic and Puzzle Journey modes, Unlockable art collections, No timers or pressure, Smooth drag-and-drop controls, Satisfying clearing effects

**In-app purchases:** none


## Frequently asked questions

### Is KeyQ Cosmic Defender free?

KeyQ Cosmic Defender is free to download, with no in-app purchases.

### Is Block Master Hall free?

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

### Do KeyQ Cosmic Defender or Block Master Hall have ads?

Block Master Hall shows ads; KeyQ Cosmic Defender does not.

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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.*