# Quantum vs portablechess

The clearest difference is device support: portablechess at 3 against Quantum's 1. Quantum's advantage is iOS requirement (17.6 vs 26.2). On price, ads and in-app purchases 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 | Quantum | portablechess |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 1 MB | 10 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Celal Can Sagnak](https://appshunter.io/developer/1865753496) | [INKWANG KIM](https://appshunter.io/developer/1877582997) |

## What reviewers say

### Quantum

[App page](https://appshunter.io/ios/app/quantum-cat/id6759192936)

**Features:** macOS Compatibility

**In-app purchases:** none


### portablechess

[App page](https://appshunter.io/ios/app/portablechess/id6759242416)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quantum free?

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

### Is portablechess free?

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

### Do Quantum or portablechess have ads?

Neither Quantum nor portablechess 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.*