LAST UPDATED: JULY 15, 2026

SUPPORT

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.

Contact Us

Email: ✉ sudokuking.app@gmail.com

We typically respond within 24–48 hours.

Frequently Asked Questions

How do I restore my Pro purchase?

If you previously purchased SudokuKing Pro but the App is not showing your Pro status:

  1. Ensure you are signed in to the same Apple Account used for the original purchase.
  2. Open the App and go to the Settings tab.
  3. Tap “Unlock Pro Version” or navigate to the Pro purchase screen.
  4. Tap the “Restore Purchase” button.
  5. Wait for the confirmation. Your Pro features should unlock immediately.

Note: Restoration requires an active internet connection to verify your purchase with Apple’s servers.

Can I get a refund?

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.

My progress isn’t syncing across devices

To sync your game progress across multiple devices via Game Center:

  1. Sign in to Game Center with the same Apple Account on all devices.
  2. Launch SudokuKing on the device with your current progress.
  3. Complete at least one level or action to trigger a save.
  4. Launch SudokuKing on your other device. The App will automatically detect and merge the latest progress.

Note: Progress merging takes the highest completed level and best star ratings from both devices. Some local-only data may not transfer.

How do I use the Notes / Pencil mode?

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.

What is the Daily Challenge?

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.

How do I delete my data?

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.

Troubleshooting

App crashes on launch

If SudokuKing crashes when you open it:

Sound effects not playing

SudokuKing uses your device’s media volume, not the ringer volume. Check that:

Purchase not appearing after payment

If you were charged but Pro features are not unlocked:

  1. Force-close the App and reopen it.
  2. Go to the Pro purchase screen and tap “Restore Purchase.”
  3. Ensure you have a stable internet connection.
  4. Verify that you are signed in to the correct Apple Account.
  5. If the issue persists after 24 hours, contact us with your purchase receipt.

Game Rules & Guides

Basic Sudoku rules are available within the App under Settings. The App includes three game variants:

System Requirements

Version Information

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