# Feynman rules vs Squarelink

The clearest difference is in-app purchases: Feynman rules at none against Squarelink's 2. Feynman rules also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Squarelink sells 2 one-off in-app purchases. Feynman rules asks for nothing beyond the download.

## The numbers

| Metric | Feynman rules | Squarelink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 days |
| Size | 6 MB | 21 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Nicolas Zanette](https://appshunter.io/developer/1889444367) |

## What reviewers say

### Feynman rules

[App page](https://appshunter.io/ios/app/feynman-rules/id6478752222)

**Features:** macOS Compatibility

**In-app purchases:** none


### Squarelink

[App page](https://appshunter.io/ios/app/squarelink-domino-puzzle/id6773255081)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack cosmétiques | $1.99 | one-time |
| Sans publicité | $2.99 | one-time |


## Frequently asked questions

### Is Feynman rules free?

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

### Is Squarelink free?

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

### Do Feynman rules or Squarelink have ads?

Squarelink shows ads; Feynman rules does not.

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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.*