Poly Rules! vs NEC Nadia
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Poly Rules!
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.
- Dynamic rule changes
- Increasingly complex scenarios
- Cognitive benefit focus
- Research support available
- Log storage and analytics (coming soon)
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PolyRules is a challenging sorting game where the rules change as you play. As you progress through the game you will encounter increasingly more complicated scenarios that challenge you in ways you can't imagine. The current release is our first prototype and we will update the game semi-frequently as we move towards a design that features tried and true game design to facilitate the cognitive benefits this game aids to provide. Researchers who are interested in using this game for their own studies please reach out to us to us through our support page for more information on how to best use this App. We have several ways to support you including a central server to store logs and automatic analytics which will be implemented in the coming weeks.
NEC Nadia
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.
- Tactile music puzzles
- Rhythmic accuracy training
- Melody tracking and recall
- Scale-degree navigation
- Chord and interval construction
- Unlockable composer content
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Nadia is a music game that blends tactile puzzles with real listening skills. Tap, trace, and build musical patterns as you explore a world of composers and unlock new content through high-scoring runs. Across a growing set of mini-games, you’ll practice: - Rhythmic accuracy (beat, downbeat, subdivisions) - Melody tracking and recall - Scale-degree navigation - Identifying texture and chord changes - Constructing intervals and chords with drag-and-drop tiles Levels are short, timed, and scored. Earn stars to unlock composers, artifacts, paintings, and stickerbook pages. Each composer offers a unique ability that adds strategy and encourages replay as you push for higher scores.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Poly Rules! | NEC Nadia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (13 ratings) — better | 4.6 (5 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 5 |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 111 MB | 208 MB |
| Age rating | 4+ | 4+ |
| Developer | Northeastern University Information Services | Brand Foundry (Pty) Ltd |
Customer experience
Poly Rules!
NEC Nadia
In-app purchases
Poly Rules!
No in-app purchases
NEC Nadia
No in-app purchases









