Support

For a bug, a puzzle question, accessibility feedback, or a feature idea, email Timmins.nathan@outlook.com.

Please include your iPhone model, iOS version, and a short description of what happened if you’re reporting a problem. A screenshot can help, but please avoid sending sensitive personal information.

Frequently asked questions

Where do the daily puzzles come from?

The app includes a bank of 366 daily puzzles. It selects one by the day of the year; it does not generate or download a new puzzle each morning. The bank repeats in later years, while your progress is tracked separately for each calendar date.

Why did my daily streak reset?

A streak counts consecutive calendar days with a completed daily puzzle. If you skip a full day, the count returns to zero until you complete a new daily puzzle. Using a hint still counts as completing a puzzle; revealing the solution does not.

How do I remove my saved puzzle data?

Sudoku Dark keeps progress and settings on your device. Removing the app removes its local data from that device. If you restore your iPhone from a backup, Apple may also restore app data from that backup.

Privacy

Read the Privacy Policy for details about app data, support email, and these pages.