# Von Neumann entropy vs AlgoBubbles

The clearest difference is in-app purchases: Von Neumann entropy at none against AlgoBubbles's 1. Von Neumann entropy also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AlgoBubbles sells 1 one-off in-app purchase. Von Neumann entropy asks for nothing beyond the download.

## The numbers

| Metric | Von Neumann entropy | AlgoBubbles |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 months |
| Size | 5 MB | 12 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [hamam alabdulla](https://appshunter.io/developer/1562896225) |

## What reviewers say

### Von Neumann entropy

[App page](https://appshunter.io/ios/app/von-neumann-entropy/id6736854190)

**Features:** macOS Compatibility

**In-app purchases:** none


### AlgoBubbles

[App page](https://appshunter.io/ios/app/algobubbles/id6756498708)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Algorithms | $7.99 | one-time |


## Frequently asked questions

### Is Von Neumann entropy free?

Von Neumann entropy is free to download, with no in-app purchases.

### Is AlgoBubbles free?

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

### Do Von Neumann entropy or AlgoBubbles have ads?

AlgoBubbles shows ads; Von Neumann entropy 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.*