# NumberBrix vs Arrow Untangle

The clearest difference is in-app purchases: Arrow Untangle at none against NumberBrix's 1. Arrow Untangle also leads on iOS requirement (15.0 vs 17.0). NumberBrix's advantage is ads (none vs shown) and update cadence (every 8 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. NumberBrix sells 1 one-off in-app purchase. Arrow Untangle asks for nothing beyond the download.

NumberBrix ships an update every 8 days, Arrow Untangle every 3 weeks. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | NumberBrix | Arrow Untangle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Size | 1 MB | 26 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [torankirite](https://appshunter.io/developer/1883564850) | [Tsubasa Sakamoto](https://appshunter.io/developer/1865950668) |

## What reviewers say

### NumberBrix

[App page](https://appshunter.io/ios/app/numberbrix-logic-puzzle/id6791078519)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


### Arrow Untangle

[App page](https://appshunter.io/ios/app/arrow-untangle-logic-puzzle/id6798055191)

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

**In-app purchases:** none


## Frequently asked questions

### Is NumberBrix free?

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

### Is Arrow Untangle free?

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

### Do NumberBrix or Arrow Untangle have ads?

Arrow Untangle shows ads; NumberBrix does not.

### Which is updated more often, NumberBrix or Arrow Untangle?

NumberBrix ships an update every 8 days, and Arrow Untangle every 3 weeks. Most recently, NumberBrix was updated on October 17, 2026 and Arrow Untangle on October 5, 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.*