# Sudoku musuby - Number Puzzle — Logic puzzles, no guessing > Logic-based Sudoku puzzles with multiple difficulty levels and detailed statistics. (iPhone/iPad app by MASASHI YOSHIDA.) - Source: https://appshunter.io/ios/app/sudoku-musuby-number-puzzle/id6792427145 (this page in markdown: same URL + `.md`) - Developer: [MASASHI YOSHIDA](https://appshunter.io/developer/6790209435) - Category: Games, Board, Puzzle - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 10 MB - Languages: American English, Dutch, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Polish, Brazilian Portuguese and 8 more - Released: 2026-07-21 - Data updated: 2026-09-17 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/sudoku-musuby-number-puzzle/id6792427145/reviews.md ## What is Sudoku musuby? Sudoku, kept simple and satisfying. Sudoku musuby is a clean, friendly sudoku app for a quick game every day. ● Every puzzle is generated, every puzzle has one answer Puzzles are created inside the app. Each one is checked to have exactly one solution before it is shown, so you can always solve it by logic alone – never by guessing. You will never run out of puzzles. ● Honest difficulty Difficulty is not based on how many clues are given, but on the techniques you need to solve the puzzle. Easy puzzles need only basic moves; Expert puzzles require advanced techniques such as X-Wing. ● Four levels Easy, Normal, Hard and Expert – from your first sudoku to a real challenge. ● Built for comfortable play ・3-2-1 countdown to start ・Pencil notes for candidates ・Mistakes shown in red (can be turned off) ・Undo one step at a time ・Auto-save: pause anytime and continue later ・Optional mistake limit (game ends after 5 mistakes) ● Hints from the wheel Each puzzle comes with 3 free hints. When they run out, spin the wheel and get 1–3 more, decided by luck. ● Track your stats Per difficulty: games played, wins, win rate, streak, best time, average time and perfect wins (no mistakes, no hints). ● Works offline The game runs fully offline – even in airplane mode. ● Privacy The app itself collects no personal information. All your data stays on your device. Whether you love sudoku or are just starting out – enjoy a little brain workout whenever you have a spare moment. ## Key features - Logic-based puzzles with single solutions - Four difficulty levels: Easy, Normal, Hard, Expert - Comfortable play features (pencil notes, undo, auto-save) - Hint system with a lucky wheel - Detailed player statistics per difficulty - Offline play support ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | AD削除 | $1.99 | one-time | ## Frequently asked questions about Sudoku musuby ### Does Sudoku musuby have ads? Yes, Sudoku musuby contains advertisements. These ads are displayed within the app to support its development and continued availability. ### How are Sudoku musuby puzzles generated? Every puzzle in Sudoku musuby is generated and checked to ensure it has exactly one solution. This means you can always solve them using logic without needing to guess. ### What are the difficulty levels in Sudoku musuby? Sudoku musuby offers four difficulty levels: Easy, Normal, Hard, and Expert. The difficulty is determined by the techniques required to solve the puzzle, not just the number of clues. ### Can I play Sudoku musuby offline? Yes, Sudoku musuby is designed to run fully offline. You can enjoy your daily brain workout even when you don't have an internet connection, including in airplane mode. ### How does the hint system work in Sudoku musuby? Each puzzle comes with 3 free hints. If you run out, you can spin a wheel to get 1-3 additional hints, with the exact number determined by luck. ### What kind of statistics does Sudoku musuby track? Sudoku musuby tracks detailed statistics per difficulty level, including games played, wins, win rate, streak, best time, average time, and perfect wins (no mistakes or hints). ### Is Sudoku musuby suitable for beginners? Yes, Sudoku musuby is suitable for beginners and experienced players alike. The Easy and Normal levels are designed for those new to Sudoku, while Hard and Expert offer a real challenge. ### What is the age rating for Sudoku musuby? Sudoku musuby has an age rating of 4+. This indicates it is suitable for children and adults, offering a universally accessible puzzle experience. ## Version history (last 5 releases) ### 1.8 — 2026-09-14 Minor improvements. ### 1.7 — 2026-09-08 Minor improvements. ### 1.6 — 2026-09-04 Now available in 17 more languages, including English, German, French, Spanish, Portuguese, Italian, Korean and Chinese. ### 1.5 — 2026-08-24 ・ランキング画面を作り直しました。難易度ごとにタブで切り替えられて、上位25人と自分の順位がひと目でわかります ・こまかな改善 ### 1.4 — 2026-08-16 ・数字ボタンを2段（1〜5／6〜9）にして、押しやすくしました ・ミスしたときに「ミス！」と大きく表示し、間違えたマスがずっと赤くなるようにしました ・ヒントで開けたマスに色を付けて、あとから見てもわかるようにしました ・ゲームオーバーになっても、広告を見れば1回だけ続きから再開できるようにしました ## More apps by MASASHI YOSHIDA - [Meえるアルバム](https://appshunter.io/ios/app/me/id6790209433) - [けいさん特訓](https://appshunter.io/ios/app/id6794106183) - [Alarm Clock: Skins & Sounds](https://appshunter.io/ios/app/alarm-clock-skins-and-sounds/id6802616989) - [Dodge360](https://appshunter.io/ios/app/dodge360/id6803469208) - [Day Count – Days Until & Since](https://appshunter.io/ios/app/day-count-days-until-and-since/id6808919612) All apps by MASASHI YOSHIDA: https://appshunter.io/developer/6790209435 --- *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 2026-09-17.*