Nagi Sudoku

The same puzzle. Something to share. Nagi Sudoku lets you challenge family and friends to the same puzzle with an 8-digit game number. Enjoy a calm Sudoku app with no ads and no subscriptions. SHARE A NUMBER. SOLVE THE SAME PUZZLE. Copy or share the 8-digit game number from your puzzle. Your family member or friend enters it in Open Game Number in Nagi Sudoku to recreate the same starting grid. Solve at your own pace, compare your times, and talk about the tricky parts, even when you are far apart. Each player needs the app on their own iPhone. Moves and progress are not synchronized in real time. PAY ONCE. ENJOY THE QUIET. No ads, no subscriptions, and no separate account to create. Regular puzzles work offline. Your grid and pencil notes are saved automatically on your device, ready for you to continue later. BRING YOUR PAPER PUZZLES Manually enter the given numbers from a book or newspaper in Custom Puzzle. Use pencil notes and undo as you solve. Before you begin, the app checks that the puzzle is valid and has exactly one solution. Custom puzzles cannot be shared using an 8-digit game number. TOOLS FOR EVERYDAY SOLVING • Four difficulty levels, from Beginner to Expert • Continuous input: select a number, then place it in multiple cells • Highlight matching numbers, rows, columns, and boxes • Pencil notes, undo, and hints • Puzzle history and progress charts • Light and dark appearance • Export and restore your saved data as a file A SHARED DAILY CHALLENGE Try the Daily Puzzle, shared by players around the world. Connect to Game Center if you would like to join the daily score leaderboard. Game Center is optional. The daily puzzle and leaderboard reset at midnight Japan Standard Time (15:00 UTC). A SHARED WEEKLY CHALLENGE Take on a new Expert puzzle every Monday at midnight Japan time. Complete it within the week to enter the ranking. You can retry both shared puzzles after completion, and Game Center records your best eligible weekly score. Game Center is optional. Available in English, Japanese, German, and French.