# Unjammed Blocks vs Block Stack

The clearest difference is in-app purchases: Unjammed Blocks at none against Block Stack's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Block Stack sells 1 one-off in-app purchase. Unjammed Blocks asks for nothing beyond the download.

Unjammed Blocks ships an update weekly, Block Stack every 4 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | Unjammed Blocks | Block Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Size | 238 MB | 204 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mad Brain Games LTD](https://appshunter.io/developer/1481009630) | [Wodh LTD](https://appshunter.io/developer/1878638321) |

## What reviewers say

### Unjammed Blocks

[App page](https://appshunter.io/ios/app/unjammed-blocks/id6803517993)

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

**In-app purchases:** none


### Block Stack

[App page](https://appshunter.io/ios/app/block-stack-color-sort-puzzle/id6815547548)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Unjammed Blocks free?

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

### Is Block Stack free?

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

### Do Unjammed Blocks or Block Stack have ads?

Both Unjammed Blocks and Block Stack show ads.

### Which is updated more often, Unjammed Blocks or Block Stack?

Unjammed Blocks ships an update weekly, and Block Stack every 4 days. Most recently, Unjammed Blocks was updated on October 15, 2026 and Block Stack on October 15, 2026.

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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.*