# Poly Rules! vs NEC Nadia

The clearest difference is review sentiment: NEC Nadia at 100% against Poly Rules!'s 80%. Poly Rules!'s advantage is rating (4.8 vs 4.6). On price, ratings volume, 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.

Poly Rules! holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews complicate that: 80% of Poly Rules!'s written reviews are positive against 100% of NEC Nadia's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | Poly Rules! | NEC Nadia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/poly-rules/id1115877374/reviews)** | [4.6 (5 ratings)](https://appshunter.io/ios/app/nec-nadia/id1539140720/reviews) |
| Number of ratings | **13** | 5 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | Free |
| Size | 111 MB | 208 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Northeastern University Information Services](https://appshunter.io/developer/455790172) | [Brand Foundry (Pty) Ltd](https://appshunter.io/developer/1003761740) |

## What reviewers say

### Poly Rules!

[App page](https://appshunter.io/ios/app/poly-rules/id1115877374)

A challenging sorting game where the rules dynamically change as you progress. It offers increasingly complex scenarios to test your cognitive abilities. Researchers can inquire about using the game for studies.

**Highlights:** Dynamic rule changes, Increasingly complex scenarios, Cognitive benefit focus, Research support available, Log storage and analytics (coming soon)

**Features:** macOS Compatibility

**In-app purchases:** none


### NEC Nadia

[App page](https://appshunter.io/ios/app/nec-nadia/id1539140720)

Engage with music through interactive puzzles. Tap, trace, and build patterns to develop listening skills and unlock a world of composers and collectibles. Enjoy short, timed levels that challenge rhythmic accuracy and melodic recall.

**Highlights:** Tactile music puzzles, Rhythmic accuracy training, Melody tracking and recall, Scale-degree navigation, Chord and interval construction, Unlockable composer content

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

**In-app purchases:** none


## Frequently asked questions

### Is Poly Rules! free?

Poly Rules! is free to download, with no in-app purchases.

### Is NEC Nadia free?

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

### Which has better reviews, Poly Rules! or NEC Nadia?

Poly Rules! is rated higher. Poly Rules! averages 4.8 out of 5 from 13 ratings, while NEC Nadia averages 4.6 from 5 ratings.

### Do Poly Rules! or NEC Nadia have ads?

Neither Poly Rules! nor NEC Nadia 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.*