# Fractions Using Visual Models vs Interaction of Living Things

The clearest difference is price: Interaction of Living Things at Free against Fractions Using Visual Models's $2.99. Interaction of Living Things also leads on device support (3 vs 1) and iOS requirement (12.0 vs 15.6). On ads and in-app purchases there is nothing between them.

Interaction of Living Things is free to download; Fractions Using Visual Models costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Fractions Using Visual Models | Interaction of Living Things |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | — |
| Size | 162 MB | 22 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Red Hong](https://appshunter.io/developer/542314714) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Fractions Using Visual Models

[App page](https://appshunter.io/ios/app/fractions-using-visual-models/id1167270272)

**Features:** macOS Compatibility

**In-app purchases:** none


### Interaction of Living Things

[App page](https://appshunter.io/ios/app/interaction-of-living-things/id6738304675)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fractions Using Visual Models free?

Fractions Using Visual Models costs $2.99, with no in-app purchases.

### Is Interaction of Living Things free?

Interaction of Living Things is free to download, with no in-app purchases.

### Do Fractions Using Visual Models or Interaction of Living Things have ads?

Neither Fractions Using Visual Models nor Interaction of Living Things 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.*