# Flex Sudoku vs Windoku. Hyper Sudoku.

The clearest difference is in-app purchases: Flex Sudoku at none against Windoku. Hyper Sudoku.'s 2. Flex Sudoku also leads on ads (none vs shown). Windoku. Hyper Sudoku.'s advantage is update cadence (every 5 days vs every 2 months) and iOS requirement (13.0 vs 15.4). On price and device support there is nothing between them.

Both are free to download. Windoku. Hyper Sudoku. sells 2 in-app purchases, starting at $2.99 per month. Flex Sudoku asks for nothing beyond the download.

Flex Sudoku ships an update every 2 months, Windoku. Hyper Sudoku. every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flex Sudoku | Windoku. Hyper Sudoku. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (8 ratings)](https://appshunter.io/ios/app/flex-sudoku/id1643590351/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 4 MB | 153 MB |
| Requires iOS | 15.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jatinder Gogna](https://appshunter.io/developer/1631001233) | [MICHAEL CHARLES LOCKYER](https://appshunter.io/developer/1859958591) |

## What reviewers say

### Flex Sudoku

[App page](https://appshunter.io/ios/app/flex-sudoku/id1643590351)

Engage with challenging Sudoku puzzles of various sizes, from classic 9x9 to larger 16x16 and 25x25 grids. Load pre-made games, create your own, and utilize a built-in solver and note-taking features to enhance your solving experience.

**Highlights:** Multiple Sudoku grid sizes (4x4 to 25x25), Load thousands of built-in games, Enter and solve your own games, Adjustable difficulty levels, Built-in Sudoku solver, Note-taking and hint system, Track game statistics

**Features:** macOS Compatibility

**In-app purchases:** none


### Windoku. Hyper Sudoku.

[App page](https://appshunter.io/ios/app/windoku-hyper-sudoku/id6759494100)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Windoku Premium Monthly | $2.99 | per month |
| Windoku Premium Yearly | $17.99 | per year |


## Frequently asked questions

### Is Flex Sudoku free?

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

### Is Windoku. Hyper Sudoku. free?

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

### Do Flex Sudoku or Windoku. Hyper Sudoku. have ads?

Windoku. Hyper Sudoku. shows ads; Flex Sudoku does not.

### Which is updated more often, Flex Sudoku or Windoku. Hyper Sudoku.?

Flex Sudoku ships an update every 2 months, and Windoku. Hyper Sudoku. every 5 days. Most recently, Flex Sudoku was updated on November 3, 2026 and Windoku. Hyper Sudoku. on October 31, 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.*