# Feynman rules vs Numbly

Feynman rules and Numbly are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Feynman rules | Numbly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/numbly/id6480306932/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | — | Free |
| Size | 6 MB | 37 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [John Cahill](https://appshunter.io/developer/1738656621) |

## What reviewers say

### Feynman rules

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Numbly

[App page](https://appshunter.io/ios/app/numbly/id6480306932)

Engage in a daily numerical puzzle where you use six numbers and operators to reach a target sum. Enjoy unlimited gameplay in workout mode and share your achievements with friends. Access answers to help you progress through challenging math puzzles.

**Highlights:** Daily number challenges, Six numbers and operators, Target sum puzzles, Social sharing, Unlimited workout mode, Access to answers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Feynman rules free?

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

### Is Numbly free?

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

### Do Feynman rules or Numbly have ads?

Neither Feynman rules nor Numbly 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.*