# Sudoku - classic sudoku — Train your brain > Classic number puzzle game for brain training with multiple difficulty levels and grid sizes. (iPhone/iPad app by 凤竹 刘.) - Source: https://appshunter.io/ios/app/sudoku-classic-sudoku/id1630726610 (this page in markdown: same URL + `.md`) - Developer: [凤竹 刘](https://appshunter.io/developer/1458564244) - Category: Games, Entertainment, Board, Puzzle - Price: Free - Rating: 4.80/5 from 12 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 28 MB - Languages: American English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany), Greek and 16 more - Released: 2022-06-22 - Data updated: 2026-07-28 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/sudoku-classic-sudoku/id1630726610/reviews.md ## What is Sudoku? Sudoku free puzzle game is a very popular number puzzle game. Many people all over the world like to play free Sudoku game. Whether you want to train your brain or pass your free time, solving Sudoku free puzzles is a very good choice. Install sudoku free app to start now! The rules of the Classic Sudoku puzzle game are very simple. The goal is to put 1 to 9 numbers into each grid cell so that each number can only appear once in each row, column, and block. Even a beginner can master the sudoku free puzzle game in a very short time. Our free sudoku puzzle game provides puzzles with multiple difficulty levels. Novices can choose simple sudoku puzzles to train their logical thinking; advanced players can choose difficult sudoku puzzles to challenge the limits of the brain. In addition to 9x9 puzzles, we provide super simple sudoku free puzzles with size 6x6, and we also provide giant sudoku free puzzles with size 16x16. Main Features - There are three types of Sudoku puzzles: 6x6, 9x9 and 16x16, suitable for both beginner and advanced players. - Complete daily challenges and collect beautiful trophies. - Game Level function includes 15,000 puzzles, ranging from easy to master. - The Smart Hint function shows the thinking step of solving puzzles and users can learn sudoku techniques easily from it. - Turning on the notes mode allows you to take notes conveniently, just like on paper. - Long press and lock one number to quickly fill in multiple cells. This function can be turned on in the settings. - Color theme, choose the color that makes your eyes the most comfortable. Other Features - Sudoku solver and generator. - Save and load game. - Ranking list. Show who solves the Sodoko puzzle the fastest. - Auto-save. Continue to play the suduko game next time. - Unlimited undo. Don’t worry about filling in the wrong numbers. - Turn on/off sound effects. - Turn on/off timer. - Highlight duplicates to avoid repeating numbers in a row, column, and block. - Zudoku support mobile phones and tablets. This is a sodoku App specially designed for soduko lovers. If you like to play soduku games, please download the suduku app and start your challenge journey immediately! We believe you will love to play this sudoko everyday and this sedoku puzzles can bring you much relaxing time. ## Key features - Multiple difficulty levels - 6x6, 9x9, and 16x16 grid sizes - Daily challenges and trophies - Smart hint function - Notes mode - Save and load game progress - Ranking list ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/sudoku-classic-sudoku/id1630726610/reviews.md ### 1/5 — Я *2024-09-13* Атстой 😒🤓 ## Frequently asked questions about Sudoku ### Does Sudoku have ads? Yes, Sudoku contains advertisements. This allows the game to be offered for free to users. ### How many puzzles are available in Sudoku? The Game Level function includes 15,000 puzzles, ranging from easy to master difficulty levels. ### What grid sizes does Sudoku offer? Sudoku offers three types of puzzles: 6x6, 9x9, and 16x16 grids, suitable for both beginner and advanced players. ### Can I get help if I'm stuck in Sudoku? Yes, the Smart Hint function shows the thinking step of solving puzzles, allowing users to learn sudoku techniques easily. ### Is Sudoku available on multiple devices? Yes, Sudoku supports mobile phones and tablets, specifically iPhone, iPad, and iPod devices. ### How often is Sudoku updated? The latest version is 1.1.7, and the app was last updated on March 15, 2025, indicating regular updates. ### What is the age rating for Sudoku? Sudoku has an age rating of 4+, making it suitable for a wide range of players. ### Can I undo moves in Sudoku? Yes, Sudoku offers unlimited undo functionality, so you don't have to worry about filling in the wrong numbers. ## Version history (last 5 releases) ### 1.1.8 — 2026-07-22 - Performance and stability improvements ### 1.1.7 — 2025-03-15 - Performance and stability improvements ### 1.1.6 — 2025-02-26 - Performance and stability improvements ### 1.1.5 — 2024-08-20 - Performance and stability improvements ### 1.1.3 — 2023-09-15 - Performance and stability improvements ## Apps similar to Sudoku | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sudoku: Sudoku Puzzle](https://appshunter.io/ios/app/sudoku-sudoku-puzzle/id1415474002) | 4.7 (365) | Free | Games | | [Sudoku - Classic Puzzles](https://appshunter.io/ios/app/sudoku-classic-puzzles/id1436156283) | 4.6 (15) | Free | Games | | [Sudoku - Numbers Logic Puzzles](https://appshunter.io/ios/app/sudoku-numbers-logic-puzzles/id1658811239) | 4.8 (13) | Free | Games | | [Sudoku - Classic brain teaser](https://appshunter.io/ios/app/sudoku-classic-brain-teaser/id1444730067) | — | Free | Games | | [Sudoku Addict](https://appshunter.io/ios/app/sudoku-addict/id1547501638) | 4.8 (489) | Free | Games | | [Sudoku - Daily Sudoku Puzzle](https://appshunter.io/ios/app/sudoku-daily-sudoku-puzzle/id6448531973) | 4.6 (18) | Free | Games | --- *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 2026-07-28.*