SUDOKU A/C

Contact & Support

Questions, problems, or suggestions? Email me and I'll get back to you as soon as I can — usually within a few days.

Frequently asked questions

Is my progress saved?

Yes. Your current puzzle, level, and best times are saved automatically on your device. Deleting the app deletes them too.

Why does the app ask for camera access?

Only for the puzzle-scan feature: point the camera at a printed sudoku and the app reads it into the board. If you never use scanning, the camera is never accessed. You can also import a puzzle from a photo instead.

Does the app need an internet connection?

No — everything, including puzzle scanning, works fully offline.

How do I start over?

Tap Clear to erase your entries on the current puzzle, or New Game for a fresh puzzle at the selected level.

Privacy Policy

Sudoku A/C does not collect any data.

The app contains no accounts, no analytics, no advertising, and no third-party services. Nothing you do in the app is transmitted anywhere.

Game progress and best times are stored only on your device. Photos taken or selected for puzzle scanning are processed entirely on your device and are never uploaded, stored, or shared.

Since no data is collected, there is nothing to request, correct, or delete. If you have any privacy questions, contact xunaizhong@gmail.com.