# Erwin vs Block'n'Roll

The clearest difference is price: Block'n'Roll at Free against Erwin's $4.99. Block'n'Roll also leads on iOS requirement (18.0 vs 26.0). Erwin's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Block'n'Roll is free to download; Erwin costs $4.99 up front. Block'n'Roll sells 1 one-off in-app purchase. Erwin asks for nothing beyond the download.

## The numbers

| Metric | Erwin | Block'n'Roll |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Paid | — |
| Size | 43 MB | 3 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tamas Bartal](https://appshunter.io/developer/896478676) | [Takayuki Hamuro](https://appshunter.io/developer/1875707249) |

## What reviewers say

### Erwin

[App page](https://appshunter.io/ios/app/erwin-a-quantum-puzzle/id6761667185)

Experience a unique 3D sliding puzzle on a cube's six faces. Merge tiles, rotate the cube, and discover quantum effects like superposition and entanglement. Play with friends in multiplayer mode.

**Highlights:** 3D cube sliding puzzle, Tile merging and scoring, Quantum effects (superposition, entanglement), Cube rotation for multiple faces, Local multiplayer via Game Center, Universal app purchase

**Features:** Game Controller support, Vision Pro support

**In-app purchases:** none


### Block'n'Roll

[App page](https://appshunter.io/ios/app/blocknroll/id6802477968)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Block'n'Roll Pro | $12.99 | one-time |


## Frequently asked questions

### Is Erwin free?

Erwin costs $4.99, with no in-app purchases.

### Is Block'n'Roll free?

Block'n'Roll is free to download, with in-app purchases available.

### Do Erwin or Block'n'Roll have ads?

Neither Erwin nor Block'n'Roll shows 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.*