# Coldoku vs Shape Sudoku

The clearest difference is review sentiment: Coldoku at 100% against Shape Sudoku's 0%. Coldoku also leads on in-app purchases (none vs 1). Shape Sudoku's advantage is update cadence (every 6 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

Coldoku ships an update every 6 weeks, Shape Sudoku every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Coldoku | Shape Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 9 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Martin Rosenthal](https://appshunter.io/developer/1728895149) | [Agata Raap](https://appshunter.io/developer/1872514072) |

## What reviewers say

### Coldoku

[App page](https://appshunter.io/ios/app/coldoku/id6479543662)

This logic game offers a colorful twist on classic Sudoku, replacing numbers with distinct shapes and hues. The objective is to arrange these elements so that each unique color and shape appears only once per row and column. It's designed as an engaging brain exercise for players of all ages.

**Highlights:** Color and shape-based gameplay, Logic puzzle mechanics, Single-player brain game, Suitable for all ages, Intuitive interface

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

**In-app purchases:** none


### Shape Sudoku

[App page](https://appshunter.io/ios/app/shape-sudoku-form9/id6774104823)

This logic puzzle game uses shapes instead of numbers, making it accessible for those with dyscalculia, young learners, or anyone who prefers visual patterns. Enjoy daily challenges with multiple difficulty levels, helpful tools, and full accessibility features.

**Highlights:** Shape-based Sudoku logic, Daily puzzles, Five difficulty levels, Notes, undo, and hints, Colorblind-friendly design, Full VoiceOver support, No ads or tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| form9+ Lifelong | $7.99 | one-time |


## Frequently asked questions

### Is Coldoku free?

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

### Is Shape Sudoku free?

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

### Do Coldoku or Shape Sudoku have ads?

Neither Coldoku nor Shape Sudoku shows ads.

### Which is updated more often, Coldoku or Shape Sudoku?

Coldoku ships an update every 6 weeks, and Shape Sudoku every 6 days. Most recently, Coldoku was updated on October 30, 2026 and Shape 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.*