SudokuStreak

SudokuStreak is a plain, ad-free sudoku app built around a single daily puzzle. Each day there is one board for everyone in the world, offered at Easy, Medium and Hard.

It is published by Coral Rose Page and came to the App Store in June 2026.

You solve the day's 9x9 grid with smart pencil marks, auto-candidates and a number focus that highlights each digit. A mistake counter and timer run as you play. When you finish, your streak moves on along a calendar, and you can share the result as coloured emoji squares. Signing in adds a daily leaderboard, friends and streak sync, but the app also works offline with no account. The hint button explains the technique behind the next move, from naked singles to pointing pairs.

The daily and its difficulties are free. A one-time Pro purchase adds Expert difficulty, Killer sudoku, Speed Run against the fastest times on today's puzzle, and practice drills. It suits players who want one shared sudoku a day and a gentle push to learn the techniques.