# Cogs vs Sudoku Zero

Cogs and Sudoku Zero both sit at 4.6 stars, but that hides the real split: 100% of Sudoku Zero's written reviews are positive against 55% of Cogs's. Sudoku Zero also leads on price (Free vs $4.99) and update cadence (every 3 weeks vs every 2 months). Cogs's advantage is chart position (#155 vs unranked) and ratings volume (33 vs 4). On rating, ads, in-app purchases and device support there is nothing between them.

Sudoku Zero is free to download; Cogs costs $4.99 up front. Cogs sells 4 one-off in-app purchases and Sudoku Zero sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Cogs against 4.5 for Sudoku Zero. That said, the two scores are not equally well evidenced: Cogs has 33 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 55% of Cogs's written reviews are positive against 100% of Sudoku Zero's.

Cogs ships an update every 2 months, Sudoku Zero every 3 weeks. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Cogs | Sudoku Zero |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.6 (33 ratings)](https://appshunter.io/ios/app/cogs/id351841075/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/sudoku-zero-number-merge/id1584827248/reviews) |
| Number of ratings | **33** | 4 |
| Positive reviews | 54.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#155** | — |
| Size | 93 MB | 14 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lazy 8 Studios](https://appshunter.io/developer/343960331) | [banuchander janarthn](https://appshunter.io/developer/650418037) |

## What reviewers say

### Cogs

[App page](https://appshunter.io/ios/app/cogs/id351841075)

**Currently charting:** #155 Top Paid · Family (US App Store)

A remastered 3D puzzle game where you construct intricate machines using sliding tiles. Explore various game modes, from building step-by-step to timed challenges and move-limited puzzles.

**Highlights:** Build complex machines with sliding tiles, 3D puzzle gameplay, Inventor Mode for learning, Time Challenge Mode, Move Challenge Mode, Remastered for modern devices

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cogs Puzzle Pack 2 | $0.99 | one-time |
| Cogs Puzzle Pack 3 | $0.99 | one-time |
| Cogs Puzzle Pack 4 | $0.99 | one-time |
| Cogs Puzzle Pack 5 | $0.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Beautiful graphics
- 🤔 Challenging puzzles
- 🎨 Lovely steampunk theme

**What reviewers complain about**

- 💰 Expensive in-app purchases
- 🔓 Lack of restore purchase option
- 🤏 Not enough free levels
- 🤯 Difficulty spike in paid levels

**Reported bugs**

- Game crashes on some devices
- Levels don't load properly

**Requested features**

- Add a reset option
- Provide more free levels
- Improve restore purchase functionality


### Sudoku Zero

[App page](https://appshunter.io/ios/app/sudoku-zero-number-merge/id1584827248)

This puzzle game challenges players to clear a grid by merging numbers. It features unique mechanics where matching numbers disappear, and different numbers combine to create new values. Strategic thinking is key to avoid getting blocked and solve increasingly difficult levels.

**Highlights:** Merge same numbers to eliminate, Merge different numbers to create new values, Blocked cells create strategic challenges, No timers, play at your own pace, Improves thinking and planning skills, Short levels for quick play

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisement From App | $1.99 | one-time |


## Frequently asked questions

### Is Cogs free?

Cogs costs $4.99, and also offers in-app purchases.

### Is Sudoku Zero free?

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

### Which has better reviews, Cogs or Sudoku Zero?

Cogs is rated higher. Cogs averages 4.6 out of 5 from 33 ratings, while Sudoku Zero averages 4.5 from 4 ratings.

### Do Cogs or Sudoku Zero have ads?

Neither Cogs nor Sudoku Zero shows ads.

### Which is updated more often, Cogs or Sudoku Zero?

Cogs ships an update every 2 months, and Sudoku Zero every 3 weeks. Most recently, Cogs was updated on October 23, 2026 and Sudoku Zero 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.*