# Classic Sudoku Master! vs DualGrid

The clearest difference is in-app purchases: DualGrid at none against Classic Sudoku Master!'s 1. Classic Sudoku Master!'s advantage is update cadence (daily vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Classic Sudoku Master! sells 1 one-off in-app purchase. DualGrid asks for nothing beyond the download.

Classic Sudoku Master! ships an update daily, DualGrid every 10 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Classic Sudoku Master! | DualGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/classic-sudoku-master/id6761011070/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 10 days |
| Monetization | Ad-supported | — |
| Size | 41 MB | 114 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ravindra Joshi](https://appshunter.io/developer/1616273225) | [KENTO ADACHI](https://appshunter.io/developer/1710945555) |

## What reviewers say

### Classic Sudoku Master!

[App page](https://appshunter.io/ios/app/classic-sudoku-master/id6761011070)

Challenge your mind with a clean and focused number puzzle game. Offers infinite puzzles with five difficulty levels, smart hints, and a notes mode. Track your progress and play offline anytime.

**Highlights:** Infinite, uniquely generated puzzles, 5 difficulty levels, Smart hint system, Notes mode for candidate numbers, Unlimited undo/redo, Offline play, Dark theme

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sudoku Master Premium | $4.99 | one-time |


### DualGrid

[App page](https://appshunter.io/ios/app/dualgrid/id6792704304)

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

**In-app purchases:** none


## Frequently asked questions

### Is Classic Sudoku Master! free?

Classic Sudoku Master! is free to download, with in-app purchases available.

### Is DualGrid free?

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

### Do Classic Sudoku Master! or DualGrid have ads?

Both Classic Sudoku Master! and DualGrid show ads.

### Which is updated more often, Classic Sudoku Master! or DualGrid?

Classic Sudoku Master! ships an update daily, and DualGrid every 10 days. Most recently, Classic Sudoku Master! was updated on October 28, 2026 and DualGrid on October 25, 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.*