# InvaZium vs Quantum Fusion

The clearest difference is in-app purchases: InvaZium at none against Quantum Fusion's 1. InvaZium also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. Quantum Fusion sells 1 one-off in-app purchase. InvaZium asks for nothing beyond the download.

## The numbers

| Metric | InvaZium | Quantum Fusion |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Size | 54 MB | 66 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Canete Campos](https://appshunter.io/developer/1273575992) | [Andrei Poriadin](https://appshunter.io/developer/1777189715) |

## What reviewers say

### InvaZium

[App page](https://appshunter.io/ios/app/invazium/id6480328706)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Fusion

[App page](https://appshunter.io/ios/app/quantum-fusion/id6785632097)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock unlimited undo | $3.99 | one-time |


## Frequently asked questions

### Is InvaZium free?

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

### Is Quantum Fusion free?

Quantum Fusion is free to download, with in-app purchases available.

### Do InvaZium or Quantum Fusion have ads?

Neither InvaZium nor Quantum Fusion 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.*