# iZhuangZi vs QM Simulator

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

QM Simulator is free to download; iZhuangZi costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | iZhuangZi | QM Simulator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 18 MB | 29 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [天从 何](https://appshunter.io/developer/914453386) | [际 郭](https://appshunter.io/developer/6797282134) |

## What reviewers say

### iZhuangZi

[App page](https://appshunter.io/ios/app/izhuangzi/id1439667592)

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

**In-app purchases:** none


### QM Simulator

[App page](https://appshunter.io/ios/app/qm-simulator-quantum-physics/id6809480339)

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

**In-app purchases:** none


## Frequently asked questions

### Is iZhuangZi free?

iZhuangZi costs $0.99, with no in-app purchases.

### Is QM Simulator free?

QM Simulator is free to download, with no in-app purchases.

### Do iZhuangZi or QM Simulator have ads?

Neither iZhuangZi nor QM Simulator 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.*