# P=NP vs Feynman rules

The clearest difference is in-app purchases: Feynman rules at none against P=NP's 6. Feynman rules also leads on ads (none vs shown). P=NP's advantage is iOS requirement (12.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. P=NP sells 6 one-off in-app purchases. Feynman rules asks for nothing beyond the download.

## The numbers

| Metric | P=NP | Feynman rules |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pnp/id1437987800/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 28 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 6 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ken L'Heritier](https://appshunter.io/developer/1437987799) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### P=NP

[App page](https://appshunter.io/ios/app/pnp/id1437987800)

Connect dots to find the shortest path in a puzzle game where the world wraps around. Use hints to guide your progress or purchase them to extend your gameplay. Unlock new challenges by completing levels.

**Highlights:** Dot-connecting puzzles, Wrapping world mechanic, Hint system, In-app shop for hints, Unlockable random puzzles, Device-adaptive puzzles

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 hints | $0.99 | one-time |
| Remove ads | $1.99 | one-time |
| 50 hints | $3.99 | one-time |
| 120 hints | $8.99 | one-time |
| 250 hints | $16.99 | one-time |
| Unlimited hints | $42.99 | 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 P=NP free?

P=NP 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 P=NP or Feynman rules have ads?

P=NP 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.*