# Boxapopa vs Feynman rules

The clearest difference is in-app purchases: Feynman rules at none against Boxapopa's 1. Boxapopa's advantage is iOS requirement (13.2 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Boxapopa sells 1 one-off in-app purchase. Feynman rules asks for nothing beyond the download.

## The numbers

| Metric | Boxapopa | Feynman rules |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Size | 42 MB | 6 MB |
| Requires iOS | **13.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Toraiocht Studios Limited](https://appshunter.io/developer/1420741934) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Boxapopa

[App page](https://appshunter.io/ios/app/boxapopa/id1550536188)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Levels 51 to 100! | $0.99 | one-time |


### Feynman rules

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Boxapopa free?

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

### Is Feynman rules free?

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

### Do Boxapopa or Feynman rules have ads?

Neither Boxapopa nor Feynman rules shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*