# K.O. Sudoku Pro vs EyeGambit

The clearest difference is price: EyeGambit at Free against K.O. Sudoku Pro's $19.99. EyeGambit also leads on in-app purchases (none vs 2) and ads (none vs shown). K.O. Sudoku Pro's advantage is update cadence (every 4 days vs every 2 months) and chart position (#198 vs unranked). On device support and iOS requirement there is nothing between them.

EyeGambit is free to download; K.O. Sudoku Pro costs $19.99 up front. K.O. Sudoku Pro sells 2 one-off in-app purchases. EyeGambit asks for nothing beyond the download.

K.O. Sudoku Pro ships an update every 4 days, EyeGambit every 2 months. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | K.O. Sudoku Pro | EyeGambit |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eyegambit/id6741042855/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#198** | — |
| Size | 36 MB | 38 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [又瑞 韦](https://appshunter.io/developer/1625836878) | [Federico Paredes Giacosa](https://appshunter.io/developer/1792711058) |

## What reviewers say

### K.O. Sudoku Pro

[App page](https://appshunter.io/ios/app/ko-sudoku-pro/id6479217148)

**Currently charting:** #198 Top Paid · Entertainment (US App Store)

This app offers a comprehensive Sudoku experience with a vast array of puzzle types and grid sizes. It includes step-by-step explanations, photo input for puzzles, and cloud backup. Enjoy a permanent ad-free experience with unlimited prompts and early access to new features.

**Highlights:** Permanent ad-free experience, Unlimited prompts, Open full game store, Cloud backup, Early access to new features, Photo to input puzzles, Step-by-step explanations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quiz Pass 30 days | $1.99 | one-time |
| Quiz Pass 365 days | $19.99 | one-time |


### EyeGambit

[App page](https://appshunter.io/ios/app/eyegambit/id6741042855)

Enhance your chess visualization and blindfold play with interactive training tools. Practice square and piece recognition, memory drills, and move identification. Includes Lichess integration and local play against friends or bots.

**Highlights:** Square recognition training, Diagonal recognition drills, Move recognition practice, Memory and replication exercises, Individual piece movement minigames, Lichess puzzle training and challenges, Local play against friends or bots

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

**In-app purchases:** none


## Frequently asked questions

### Is K.O. Sudoku Pro free?

K.O. Sudoku Pro costs $19.99, and also offers in-app purchases.

### Is EyeGambit free?

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

### Do K.O. Sudoku Pro or EyeGambit have ads?

K.O. Sudoku Pro shows ads; EyeGambit does not.

### Which is updated more often, K.O. Sudoku Pro or EyeGambit?

K.O. Sudoku Pro ships an update every 4 days, and EyeGambit every 2 months. Most recently, K.O. Sudoku Pro was updated on November 5, 2026 and EyeGambit on November 4, 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.*