# Kozui vs Gun Runner X

The clearest difference is in-app purchases: Kozui at none against Gun Runner X's 5. Kozui also leads on ads (none vs shown). Gun Runner X's advantage is update cadence (every 2 days vs every 3 months) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Gun Runner X sells 5 one-off in-app purchases. Kozui asks for nothing beyond the download.

Kozui ships an update every 3 months, Gun Runner X every 2 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Kozui | Gun Runner X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/kozui/id1378563689/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 23 MB | 120 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sean O'Connor](https://appshunter.io/developer/305324345) | [Sky Benson](https://appshunter.io/developer/1839805807) |

## What reviewers say

### Kozui

[App page](https://appshunter.io/ios/app/kozui/id1378563689)

Engage in fast-paced, mind-melting puzzle challenges against a samurai. Test your reflexes and cognitive skills to see how long you can endure the escalating difficulty.

**Highlights:** Fast-paced puzzles, Mind-melting challenges, Samurai opponent, Endurance testing, Cognitive skill development

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

**In-app purchases:** none


### Gun Runner X

[App page](https://appshunter.io/ios/app/gun-runner-x/id6752546586)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Small | $0.99 | one-time |
| Gold Medium | $1.99 | one-time |
| No Ads | $2.99 | one-time |
| Starter Pack | $3.99 | one-time |
| Gold Big | $3.99 | one-time |


## Frequently asked questions

### Is Kozui free?

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

### Is Gun Runner X free?

Gun Runner X is free to download, with in-app purchases available.

### Do Kozui or Gun Runner X have ads?

Gun Runner X shows ads; Kozui does not.

### Which is updated more often, Kozui or Gun Runner X?

Kozui ships an update every 3 months, and Gun Runner X every 2 days. Most recently, Kozui was updated on October 24, 2026 and Gun Runner X on October 28, 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.*