We’re here to help! If you have questions about SudokuKing, need assistance with a purchase, or are experiencing a technical issue, please review the resources below or contact us directly.
If you previously purchased SudokuKing Pro but the App is not showing your Pro status:
Note: Restoration requires an active internet connection to verify your purchase with Apple’s servers.
All refunds are handled by Apple, not by us. To request a refund:
Refund eligibility is determined by Apple’s refund policy. We do not have the ability to process refunds directly.
To sync your game progress across multiple devices via Game Center:
Note: Progress merging takes the highest completed level and best star ratings from both devices. Some local-only data may not transfer.
While solving a puzzle, tap the “Notes” button (or pencil icon) to enter pencil mode. In this mode, tap any number to add or remove it as a candidate note in the selected cell. Notes help you track possible values. Tap “Notes” again to exit pencil mode and enter final answers.
Every day, a new puzzle is selected as the Daily Challenge. All players worldwide receive the same puzzle. Your completion time is submitted to the Game Center leaderboard (if you are signed in). You can attempt the Daily Challenge once per day. A new puzzle is available at midnight UTC.
To remove all locally stored game data:
To delete Game Center data (leaderboard scores, saved games), go to iOS Settings → Game Center → Manage your account, or contact us directly for assistance.
If SudokuKing crashes when you open it:
SudokuKing uses your device’s media volume, not the ringer volume. Check that:
If you were charged but Pro features are not unlocked:
Basic Sudoku rules are available within the App under Settings. The App includes three game variants:
Current App Version: 1.0
Release Date: July 2026
Last Update: July 15, 2026
Still Need Help?
If your issue is not covered above, please contact us with the following details:
Email: ✉ sudokuking.app@gmail.com