# Diffusion and osmosis vs Osmosis and Diffusion

The clearest difference is price: Osmosis and Diffusion at Free against Diffusion and osmosis's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Osmosis and Diffusion is free to download; Diffusion and osmosis costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Diffusion and osmosis | Osmosis and Diffusion |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 30 months | — |
| Size | 40 MB | 27 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Diffusion and osmosis

[App page](https://appshunter.io/ios/app/diffusion-and-osmosis/id1199769507)

**Features:** macOS Compatibility

**In-app purchases:** none


### Osmosis and Diffusion

[App page](https://appshunter.io/ios/app/osmosis-and-diffusion/id6744108717)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diffusion and osmosis free?

Diffusion and osmosis costs $0.99, with no in-app purchases.

### Is Osmosis and Diffusion free?

Osmosis and Diffusion is free to download, with no in-app purchases.

### Do Diffusion and osmosis or Osmosis and Diffusion have ads?

Neither Diffusion and osmosis nor Osmosis and Diffusion 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.*