# Combination & Decomposition vs Physical Changes in Matter

The clearest difference is price: Physical Changes in Matter at Free against Combination & Decomposition's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Physical Changes in Matter is free to download; Combination & Decomposition costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Combination & Decomposition | Physical Changes in Matter |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | — |
| Size | 149 MB | 30 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Combination & Decomposition

[App page](https://appshunter.io/ios/app/combination-and-decomposition/id1544403959)

**Features:** macOS Compatibility

**In-app purchases:** none


### Physical Changes in Matter

[App page](https://appshunter.io/ios/app/physical-changes-in-matter/id6514314103)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Combination & Decomposition free?

Combination & Decomposition costs $1.99, with no in-app purchases.

### Is Physical Changes in Matter free?

Physical Changes in Matter is free to download, with no in-app purchases.

### Do Combination & Decomposition or Physical Changes in Matter have ads?

Neither Combination & Decomposition nor Physical Changes in Matter 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.*