# .Decluster Zero vs Sudoku Zen

The clearest difference is price: Sudoku Zen at Free against .Decluster Zero's $4.99. Sudoku Zen also leads on update cadence (every 3 weeks vs every 2 months). .Decluster Zero's advantage is device support (4 vs 1) and iOS requirement (12.0 vs 17.0). On ads and in-app purchases there is nothing between them.

Sudoku Zen is free to download; .Decluster Zero costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

.Decluster Zero ships an update every 2 months, Sudoku Zen every 3 weeks. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | .Decluster Zero | Sudoku Zen |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/decluster-zero/id1013536952/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 94.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 54 MB | 21 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [MASAYUKI ITO](https://appshunter.io/developer/820672202) | [Yuki Okawa](https://appshunter.io/developer/1867195492) |

## What reviewers say

### .Decluster Zero

[App page](https://appshunter.io/ios/app/decluster-zero/id1013536952)

Experience a Japanese-style bullet-hell shooter with retro graphics and modern gameplay. Utilize a unique bullet-canceling system and homing lasers to overcome intense enemy barrages. Features include multiple levels, challenging boss battles, and adjustable difficulty.

**Highlights:** Japanese style bullet-hell shooter, Bullet-Canceling system, Homing laser mechanic, 5+ levels with boss battles, 4 difficulty levels, Optimized mobile controls, Replay video integration

**Features:** Vision Pro support

**In-app purchases:** none


### Sudoku Zen

[App page](https://appshunter.io/ios/app/sudoku-zen-number-logic/id6785088442)

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

**In-app purchases:** none


## Frequently asked questions

### Is .Decluster Zero free?

.Decluster Zero costs $4.99, with no in-app purchases.

### Is Sudoku Zen free?

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

### Do .Decluster Zero or Sudoku Zen have ads?

Neither .Decluster Zero nor Sudoku Zen shows ads.

### Which is updated more often, .Decluster Zero or Sudoku Zen?

.Decluster Zero ships an update every 2 months, and Sudoku Zen every 3 weeks. Most recently, .Decluster Zero was updated on October 22, 2026 and Sudoku Zen on October 15, 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.*