# Kilowatt Krush vs Physical Changes in Matter

The clearest difference is iOS requirement: Physical Changes in Matter at 12.0 against Kilowatt Krush's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Kilowatt Krush | Physical Changes in Matter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (86 ratings)](https://appshunter.io/ios/app/kilowatt-krush/id1425034972/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 216 MB | 30 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duke Energy](https://appshunter.io/developer/1299896621) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Kilowatt Krush

[App page](https://appshunter.io/ios/app/kilowatt-krush/id1425034972)

Engage in a series of fun games to unlock cards and build your virtual house and background. Learn about energy conservation, safety, and products while playing. This app is designed to complement an in-school energy education program.

**Highlights:** Unlock cards by winning games, Build and customize houses, Learn about energy conservation, Energy safety education, Interactive arcade games, Earn points for in-game rewards

**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 Kilowatt Krush free?

Kilowatt Krush is free to download, 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 Kilowatt Krush or Physical Changes in Matter have ads?

Neither Kilowatt Krush 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.*