# Poly Rules! vs Infinite Shells

The clearest difference is ads: Poly Rules! at none against Infinite Shells's shown. Poly Rules! also leads on iOS requirement (12.0 vs 15.6). On price, update cadence, in-app purchases and device support 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! ships an update monthly, Infinite Shells every 3 weeks. Both last shipped on September 8, 2026.

## The numbers

| Metric | Poly Rules! | Infinite Shells |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/poly-rules/id1115877374/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 111 MB | 30 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Northeastern University Information Services](https://appshunter.io/developer/455790172) | [Ranjel Pineda](https://appshunter.io/developer/1892548858) |

## 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


### Infinite Shells

[App page](https://appshunter.io/ios/app/infinite-shells/id6762028424)

**In-app purchases:** none


## Frequently asked questions

### Is Poly Rules! free?

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

### Is Infinite Shells free?

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

### Do Poly Rules! or Infinite Shells have ads?

Infinite Shells shows ads; Poly Rules! does not.

### Which is updated more often, Poly Rules! or Infinite Shells?

Poly Rules! ships an update monthly, and Infinite Shells every 3 weeks. Most recently, Poly Rules! was updated on September 8, 2026 and Infinite Shells 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.*