# Brain Puzzle vs Untangle

The clearest difference is in-app purchases: Untangle at none against Brain Puzzle's 9. Untangle also leads on ads (none vs shown) and update cadence (every 4 days vs every 10 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Brain Puzzle sells 9 in-app purchases, starting at $0.99 per 7 days. Untangle asks for nothing beyond the download.

Brain Puzzle ships an update every 10 months, Untangle every 4 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Brain Puzzle | Untangle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 4 days** |
| Size | 38 MB | 6 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YOUNG TRADING CO.,LIMITED](https://appshunter.io/developer/1653409260) | [MSP AI, LLC](https://appshunter.io/developer/6783069493) |

## What reviewers say

### Brain Puzzle

[App page](https://appshunter.io/ios/app/brain-puzzle-training-tests/id6444262243)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Plus Premium | $0.99 | per 7 days |
| Brain Plus Premium | $1.99 | per 7 days |
| Brain Plus Premium | $2.99 | per 7 days |
| Brain Plus Premium | $3.99 | per month |
| Brain Plus Premium | $5.99 | per month |
| Brain Plus Premium | $9.99 | per month |
| Brain Plus Premium | $27.99 | per year |
| Brain Plus Premium | $35.99 | per year |
| Brain Plus Premium | $45.99 | per year |


### Untangle

[App page](https://appshunter.io/ios/app/untangle-night-sky/id6789270327)

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Puzzle free?

Brain Puzzle is free to download, with in-app purchases available.

### Is Untangle free?

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

### Do Brain Puzzle or Untangle have ads?

Brain Puzzle shows ads; Untangle does not.

### Which is updated more often, Brain Puzzle or Untangle?

Brain Puzzle ships an update every 10 months, and Untangle every 4 days. Most recently, Brain Puzzle was updated on October 7, 2026 and Untangle on October 10, 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.*