# Brain Training 15 puzzle vs ISUD Zero

The clearest difference is price: Brain Training 15 puzzle at Free against ISUD Zero's $0.99. Brain Training 15 puzzle also leads on iOS requirement (8.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Brain Training 15 puzzle is free to download; ISUD Zero costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Brain Training 15 puzzle | ISUD Zero |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.0 (12 ratings)](https://appshunter.io/ios/app/brain-training-15-puzzle/id918924212/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | — |
| Monetization | Free | — |
| Size | 17 MB | 119 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [makoto yanagisawa](https://appshunter.io/developer/1510302286) | [Suwitcha Sugthana](https://appshunter.io/developer/372726303) |

## What reviewers say

### Brain Training 15 puzzle

[App page](https://appshunter.io/ios/app/brain-training-15-puzzle/id918924212)

This game challenges your memory and spatial reasoning. Memorize a path, then retrace it to reach the goal. It's a simple yet engaging puzzle experience.

**Highlights:** Path memorization, Trail retracing, Drag and drop controls, Eidetic memory training, Simple puzzle mechanics

**Features:** macOS Compatibility

**In-app purchases:** none


### ISUD Zero

[App page](https://appshunter.io/ios/app/isud-zero/id6765926399)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Brain Training 15 puzzle free?

Brain Training 15 puzzle is free to download, with no in-app purchases.

### Is ISUD Zero free?

ISUD Zero costs $0.99, with no in-app purchases.

### Do Brain Training 15 puzzle or ISUD Zero have ads?

Neither Brain Training 15 puzzle nor ISUD Zero shows ads.

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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.*