# Kozui vs 1121

The clearest difference is rating: 1121 at 5.0 against Kozui's 4.4. 1121 also leads on update cadence (every 8 days vs every 3 months) and review sentiment (100% vs 86%). Kozui's advantage is in-app purchases (none vs 4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. 1121 sells 4 one-off in-app purchases. Kozui asks for nothing beyond the download.

1121 holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 86% of Kozui's written reviews are positive against 100% of 1121's.

Kozui ships an update every 3 months, 1121 every 8 days. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Kozui | 1121 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/kozui/id1378563689/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/1121/id1400669212/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 23 MB | 64 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sean O'Connor](https://appshunter.io/developer/305324345) | [Ming-Shiuan Yu](https://appshunter.io/developer/1400669211) |

## 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


### 1121

[App page](https://appshunter.io/ios/app/1121/id1400669212)

A tile-eliminating puzzle game where you swipe a 6x6 board to arrange mathematical expression tiles. Clear levels by eliminating all tiles, overcoming obstacles, and aiming for the fewest moves.

**Highlights:** Tile-eliminating puzzle gameplay, Swipe to move or merge tiles, Mathematical expression tiles, Obstacles and traps, 100 free levels, Unlockable advanced levels, Shortest solution challenges

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 hints | $0.99 | one-time |
| Extra level (Stop Point) | $0.99 | one-time |
| 50 hints | $1.99 | one-time |
| 100 hints | $2.99 | one-time |


## Frequently asked questions

### Is Kozui free?

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

### Is 1121 free?

1121 is free to download, with in-app purchases available.

### Which has better reviews, Kozui or 1121?

1121 is rated higher. Kozui averages 4.4 out of 5 from 5 ratings, while 1121 averages 5.0 from 2 ratings.

### Do Kozui or 1121 have ads?

Neither Kozui nor 1121 shows ads.

### Which is updated more often, Kozui or 1121?

Kozui ships an update every 3 months, and 1121 every 8 days. Most recently, Kozui was updated on November 2, 2026 and 1121 on November 11, 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.*