# OddBalls vs Poly Rules!

The clearest difference is rating: Poly Rules! at 4.8 against OddBalls's 4.0. Poly Rules! also leads on update cadence (monthly vs every 38 months). OddBalls's advantage is review sentiment (92% vs 80%) and iOS requirement (9.0 vs 12.0). 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 4.0. Both are backed by a comparable volume of ratings — 5 and 13 respectively. Written reviews complicate that: 92% of OddBalls'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.

OddBalls ships an update every 38 months, Poly Rules! monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | OddBalls | Poly Rules! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/oddballs/id622202740/reviews) | **[4.8 (13 ratings)](https://appshunter.io/ios/app/poly-rules/id1115877374/reviews)** |
| Number of ratings | 5 | **13** |
| Positive reviews | **92.3% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Monthly** |
| Monetization | Free | Free |
| Size | 135 MB | 111 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Graham Davis](https://appshunter.io/developer/622202743) | [Northeastern University Information Services](https://appshunter.io/developer/455790172) |

## What reviewers say

### OddBalls

[App page](https://appshunter.io/ios/app/oddballs/id622202740)

Guide unique balls through challenging physics-based puzzles by utilizing their special traits and power-ups. Explore a facility filled with obstacles, collect energy points, and uncover a secret storyline with multiple endings.

**Highlights:** Over 80 physics puzzles, Three distinct balls with special traits, Multiple power-ups, Interactive obstacles, Secret storyline with multiple endings, Game Center Leaderboards

**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 OddBalls free?

OddBalls 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, OddBalls or Poly Rules!?

Poly Rules! is rated higher. OddBalls averages 4.0 out of 5 from 5 ratings, while Poly Rules! averages 4.8 from 13 ratings.

### Do OddBalls or Poly Rules! have ads?

Neither OddBalls nor Poly Rules! shows ads.

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

OddBalls ships an update every 38 months, and Poly Rules! monthly. Most recently, OddBalls was updated on November 1, 2026 and Poly Rules! on November 2, 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.*