# Sudoku # vs 7Sec Chess

The clearest difference is update cadence: 7Sec Chess at weekly against Sudoku #'s every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sudoku # ships an update every 3 weeks, 7Sec Chess weekly. The most recent releases landed on September 19, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | Sudoku # | 7Sec Chess |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (324 ratings)](https://appshunter.io/ios/app/sudoku/id1494079570/reviews)** | — |
| Number of ratings | **324** | — |
| Positive reviews | 79.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 142 MB | 120 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jinyang Tang](https://appshunter.io/developer/1486286857) | [Salih Eksioglu](https://appshunter.io/developer/1633491617) |

## What reviewers say

### Sudoku #

[App page](https://appshunter.io/ios/app/sudoku/id1494079570)

This classic Sudoku game offers a unique and fun experience with levels designed by AI and machine learning. It helps exercise your brain, memory, and logic skills with five difficulty options and numerous levels.

**Highlights:** AI-designed Sudoku levels, Brain, memory, and logic training, 5 difficulty options, Thousands of levels, Human-solvable board filtering

**In-app purchases:** none


### 7Sec Chess

[App page](https://appshunter.io/ios/app/7sec-chess/id6754979752)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku # free?

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

### Is 7Sec Chess free?

7Sec Chess is free to download, with no in-app purchases.

### Do Sudoku # or 7Sec Chess have ads?

Both Sudoku # and 7Sec Chess show ads.

### Which is updated more often, Sudoku # or 7Sec Chess?

Sudoku # ships an update every 3 weeks, and 7Sec Chess weekly. Most recently, Sudoku # was updated on September 19, 2026 and 7Sec Chess on May 18, 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.*