# Brain Games Brains15 vs Poly Worlds

The clearest difference is ads: Brain Games Brains15 at none against Poly Worlds's shown. Brain Games Brains15 also leads on monetization model (free vs ad-supported) and iOS requirement (10.0 vs 15.0). Poly Worlds's advantage is update cadence (weekly vs every 3 months). On price, 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.

Brain Games Brains15 ships an update every 3 months, Poly Worlds weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Brain Games Brains15 | Poly Worlds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/poly-worlds-hidden-object/id6749450133/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 47.2% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 17 MB | 191 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Watson](https://appshunter.io/developer/1018183343) | [BugFix Games Entertainment](https://appshunter.io/developer/1689361525) |

## What reviewers say

### Brain Games Brains15

[App page](https://appshunter.io/ios/app/brain-games-brains15/id1069796800)

This app offers a collection of fifteen classic puzzle games designed to challenge your mind. It includes popular titles like Sudoku, Minesweeper, and the 15 puzzle, providing a variety of brain-training exercises.

**Highlights:** Fifteen classic puzzle games, Sudoku variants, Minesweeper, 15 puzzle, Memory and logic challenges, Color and territory puzzles

**In-app purchases:** none


### Poly Worlds

[App page](https://appshunter.io/ios/app/poly-worlds-hidden-object/id6749450133)

Engage your keen observation skills in a vibrant world of detailed scenes. Search and tap to find hidden items before the clock runs out, with unlimited retries and no pressure.

**Highlights:** Zoom and tap to search, Find hidden objects, Beat the timer, Unlimited retries, Toy-inspired scenes, Playful environments

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain Games Brains15 free?

Brain Games Brains15 is free to download, with no in-app purchases.

### Is Poly Worlds free?

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

### Do Brain Games Brains15 or Poly Worlds have ads?

Poly Worlds shows ads; Brain Games Brains15 does not.

### Which is updated more often, Brain Games Brains15 or Poly Worlds?

Brain Games Brains15 ships an update every 3 months, and Poly Worlds weekly. Most recently, Brain Games Brains15 was updated on November 2, 2026 and Poly Worlds on October 30, 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.*