
Sudoku OTG | Fast Logic Puzzle
Fast, focused Sudoku anywhere
About
Enjoy classic 9x9 Sudoku offline on your iPhone or iPad. Features smart hints, notes, undo/redo, and customizable themes. Track your progress with detailed stats and achievements, all without needing an account.
What's New in Sudoku OTG | Fast Logic Puzzle
0.1.0
October 16, 2025
・Now includes an English tutorial for first‑time users ・Minor bug fixes and performance improvements
Developer apps
FAQ
Does Sudoku OTG have ads?
Yes, Sudoku OTG contains advertisements. A 'Second Chance' feature allows users to watch a short ad to continue after a game over, with one mistake remaining.
Can I play Sudoku OTG offline?
Yes, Sudoku OTG is designed for offline play, allowing you to enjoy classic 9x9 Sudoku on your iPhone and iPad without an internet connection.
What difficulty levels are available in Sudoku OTG?
Sudoku OTG offers multiple difficulty levels, including Easy, Medium, Hard, and Expert, catering to players of all skill levels.
Does Sudoku OTG require an account to play?
No, Sudoku OTG does not require an account to play. Your progress is automatically saved, and you can manually save your games as well.
How does Sudoku OTG help me improve?
Sudoku OTG provides smart hints, notes (pencil marks), and an optional error highlighting feature. You can also track your time, view detailed statistics, and use the 'Give Up' option to reveal the full solution for learning.
What devices does Sudoku OTG support?
Sudoku OTG is supported on iPhone, iPad, and iPod devices, offering a consistent experience across Apple's mobile platforms.
How often is Sudoku OTG updated?
The latest version of Sudoku OTG is 0.1.0, and it was last updated on October 16, 2025. Future updates will likely continue to refine the gameplay and features.
What is the age rating for Sudoku OTG?
Sudoku OTG has an age rating of 4+, making it suitable for a wide range of players interested in logic puzzles.





