# Classic Nonogram vs Flex Sudoku

The clearest difference is review sentiment: Flex Sudoku at 50% against Classic Nonogram's 0%. Flex Sudoku also leads on rating (3.4 vs 1.0) and in-app purchases (none vs 1). Classic Nonogram's advantage is iOS requirement (11.0 vs 15.4). On price and device support there is nothing between them.

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

Flex Sudoku holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: Flex Sudoku has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Classic Nonogram's written reviews are positive against 50% of Flex Sudoku's.

Classic Nonogram ships an update every 10 months, Flex Sudoku every 2 months. The most recent releases landed on June 11, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | Classic Nonogram | Flex Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/classic-nonogram/id1622168797/reviews) | **[3.4 (7 ratings)](https://appshunter.io/ios/app/flex-sudoku/id1643590351/reviews)** |
| Number of ratings | 1 | **7** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 4 MB |
| Requires iOS | **11.0** | 15.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Code This Lab srl](https://appshunter.io/developer/377003842) | [Jatinder Gogna](https://appshunter.io/developer/1631001233) |

## What reviewers say

### Classic Nonogram

[App page](https://appshunter.io/ios/app/classic-nonogram/id1622168797)

This logic puzzle game challenges you to color cells based on number clues. With multiple difficulty levels and limited lives, it offers a brain-teasing experience for puzzle enthusiasts.

**Highlights:** Logic-based cell coloring, Number clues for guidance, Multiple difficulty levels, Limited lives mechanic, Extensive level progression

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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


## Frequently asked questions

### Is Classic Nonogram free?

Classic Nonogram is free to download, with in-app purchases available.

### Is Flex Sudoku free?

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

### Which has better reviews, Classic Nonogram or Flex Sudoku?

Flex Sudoku is rated higher. Classic Nonogram averages 1.0 out of 5 from 1 ratings, while Flex Sudoku averages 3.4 from 7 ratings.

### Do Classic Nonogram or Flex Sudoku have ads?

Classic Nonogram shows ads; Flex Sudoku does not.

### Which is updated more often, Classic Nonogram or Flex Sudoku?

Classic Nonogram ships an update every 10 months, and Flex Sudoku every 2 months. Most recently, Classic Nonogram was updated on June 11, 2026 and Flex Sudoku on July 5, 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.*