# Three World vs Poly Rules!

The clearest difference is review sentiment: Poly Rules! at 80% against Three World's 25%. Poly Rules! also leads on ratings volume (13 vs 2). Three World's advantage is update cadence (weekly vs monthly) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Three World holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Poly Rules! has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 25% of Three World's written reviews are positive against 80% of Poly Rules!'s, so the app with the better star average is not the one people write more warmly about.

Three World ships an update weekly, Poly Rules! monthly. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Three World | Poly Rules! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/three-world/id996809760/reviews)** | [4.8 (13 ratings)](https://appshunter.io/ios/app/poly-rules/id1115877374/reviews) |
| Number of ratings | 2 | **13** |
| Positive reviews | 25.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | Free |
| Size | 17 MB | 111 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Huntergame Interactive Technology Co.,Ltd](https://appshunter.io/developer/953928156) | [Northeastern University Information Services](https://appshunter.io/developer/455790172) |

## What reviewers say

### Three World

[App page](https://appshunter.io/ios/app/three-world/id996809760)

A simple puzzle game where players tap the screen to match colors or identify different colors. It's designed to improve focus and concentration, offering a challenge to achieve higher scores.

**Highlights:** Color matching gameplay, Differentiating colors, Focus enhancement, Score tracking, GameCenter integration

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Three World free?

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

### Is Poly Rules! free?

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

### Which has better reviews, Three World or Poly Rules!?

Three World is rated higher. Three World averages 5.0 out of 5 from 2 ratings, while Poly Rules! averages 4.8 from 13 ratings.

### Do Three World or Poly Rules! have ads?

Neither Three World nor Poly Rules! shows ads.

### Which is updated more often, Three World or Poly Rules!?

Three World ships an update weekly, and Poly Rules! monthly. Most recently, Three World was updated on September 11, 2026 and Poly Rules! on September 8, 2026.

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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.*