Room for a
clearer mind.
Offline Sudoku for iPhone and iPad. Five difficulty levels, saved progress, and a quiet moment to play at your pace.
Support
How do I continue my game?
Open Sudoku and choose Continue game on Home. During a puzzle, tap Home to save your progress and pause the timer. New game and Statistics are also available from Home.
Do I need an account or internet?
No. Puzzles are generated on your device and the game works offline. There is no login, advertising, or analytics.
Why does the timer pause?
The timer measures time spent in the puzzle. It pauses on Home, in menus, when the app is inactive, and when you lock your device. Continuing your puzzle resumes it.
How do notes, hints, and undo work?
Select an empty cell, turn on Notes, and tap numbers to add or remove pencil marks. Hint fills the selected unsolved cell or the next available one. Undo restores previous entries and notes. Mistakes and hint counts remain cumulative.
Can I move my progress to another device?
The app has no cross-device sync. Progress is stored locally. Device backup and restore behavior is managed by Apple and your device settings. Deleting the app removes its local data, so avoid reinstalling it as a troubleshooting step if you want to preserve progress.
Contact
For help with Sudoku or questions about privacy, email contact@hazytrails.com.
For technical issues, include your device model, iOS version, and a short description of what happened. Please avoid sending sensitive personal information.
Privacy policy
Effective November 10, 2026
No data collection
Sudoku does not collect or transmit personal information or gameplay data to the developer. No account is required.
Saved progress
Your current puzzle, notes, undo history, elapsed time, mistakes, hints, and game statistics are stored in the app’s local storage. They are used only to restore your game and display your statistics.
No tracking or advertising
Sudoku contains no advertising, analytics services, tracking tools, or third-party software development kits. It works without an internet connection.
Backups and removal
Device backups managed by Apple may include the app’s local data, depending on your device settings. The developer cannot access these backups. Deleting the app removes its local data from the device; backup copies are controlled through your Apple backup settings.
Support
If you contact contact@hazytrails.com, any information you provide is used to respond to your request. Avoid sending sensitive personal information.
Policy changes
If the app’s data practices change, this policy and the App Store privacy information will be updated to describe those changes.