# Sudoku 9×9

> Sudoku 9×9 (iPhone/iPad app by Ryosuke Asano.)

- Source: https://appshunter.io/ios/app/sudoku-99/id6757303711 (this page in markdown: same URL + `.md`)
- Developer: [Ryosuke Asano](https://appshunter.io/developer/1858758761)
- Category: Games, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-03-21
- Data updated: 2026-05-21
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-99/id6757303711/reviews.md

## What is Sudoku 9×9?

Ultimate simplicity. An endlessly playable, logical puzzle.

No unnecessary features. Just a pure, refined app for those who truly want to enjoy Sudoku.

Featuring high-quality puzzles for everyone from beginners to advanced players, anytime, anywhere. Perfect for your daily commute or a relaxing break before bed.

【Key Features】
◆ 4 Endless Difficulties
Choose from Easy, Normal, Hard, and the newly added "Extreme" mode, which features the absolute minimum of 17 starting clues. We guarantee that every puzzle has a "unique solution" that can be solved purely through logic. No unfair guessing required.

◆ Built-in Solver Mode
Input puzzles from newspapers or magazines to analyze and reveal the answers. With our latest update, you can also load your active game board with a single tap to help you out when you're stuck. It's a powerful tool that can even detect if a puzzle has "no solution" or "multiple solutions."

◆ Designed for Comfort
・Auto-save: Close the app anytime; you can always resume exactly where you left off.
・Error Highlighting: Duplicate numbers turn red instantly, helping you spot mistakes naturally without needing to toggle any settings.
・Dark Mode Support: Colors adjust automatically based on your device settings, making nighttime play easy on the eyes.

◆ Useful Tools
・Save Board Image: Save your work-in-progress or your completed masterpiece to your Camera Roll. Great for keeping records or sharing on social media!

◆ 100% Ad-Free
No ads to interrupt your flow. Immerse yourself completely in the puzzle.

For a quick brain workout or a refreshing break, give "Simple Sudoku" a try!


## Version history (last 4 releases)

### 1.3 — 2026-05-17

Bug fixes and small improvements.

### 1.2 — 2026-03-24

Thank you for playing "Sudoku 9×9"!
In this update, we've added an exciting new mode to challenge your skills, along with convenient features for a smoother playing experience.

【New Features & Improvements】

New "Extreme" Difficulty:
We've unlocked the legendary 17-clue Sudoku—the absolute mathematical limit for a puzzle to have a single, unique solution. Are you ready to test your absolute limits?

Enhanced Solver Integration:
Added a "Load Current Board" button (the pen icon) to the top right corner of the Solver screen. If you get stuck, you can now copy your active puzzle into the solver with a single tap to find hints.

Improved Generation UI:
A new loading screen with a progress percentage now displays while generating a new game, so you know exactly when your puzzle is ready.

### 1.1 — 2026-03-03

問題生成ロジックの改善。

### 1.0 — 2026-01-06

No release notes.

## More apps by Ryosuke Asano

- [マルチメモ](https://appshunter.io/ios/app/id6757674200)

All apps by Ryosuke Asano: https://appshunter.io/developer/1858758761

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-21.*