Sudoku Brainzy: fun, brainy

A fresh Daily Challenge every morning, a coach that teaches real techniques, and 10 variants from Killer to Thermo. Calm, private, and it works fully offline.

Sudoku Zen is a calm, beautiful Sudoku that helps you get better. Every puzzle has exactly one solution and can be solved by logic alone, with no guessing.

A COACH, NOT JUST A HINT BUTTON Stuck? Tap the bulb. The first tap points you to the right area. The next names the technique and draws the logic on the board. Only then does it place the digit. Hints check your mistakes first, so you learn what went wrong.

DAILY CHALLENGE A new puzzle every day, the same for everyone, even offline. Difficulty rises through the week. Each Daily you finish reveals a tile of the month's mosaic, and your streak keeps you coming back, with rest days to protect it.

PUZZLES THAT FIT YOU Six levels from Beginner to Master, graded by the techniques each puzzle needs. "Just right" picks the level that matches your skill rating, which grows as you play.

SUDOKU ACADEMY 30 short lessons, from the basics to X-Wing and Swordfish. Each one shows the technique on a live board, then lets you practise it on a real puzzle.

10 VARIANTS Killer, Thermo, Arrow, Kropki, Jigsaw, Diagonal, Hyper, Even–Odd, and Mini 4×4 and 6×6 grids.

BRING PUZZLES FROM PAPER Scan a Sudoku from a newspaper or book with your camera, check the digits, and play it here. Or type one in, or paste a puzzle code from a friend.

MADE TO FEEL GOOD • Notes that clear themselves, colour marking and a spotlight on row, column and box • Rewind any game move by move, or jump back to your first mistake • Zen Mode: no clock, no counter, with a calm soundscape • Race your own best time on a replayed puzzle • Grow a garden: every solve plants something new • 40 awards and detailed stats

BUILT FOR iPHONE AND iPAD Home Screen and Lock Screen widgets, your game on the Lock Screen while you're away, Siri and Shortcuts, Focus filter support, Handoff, Apple Pencil handwriting and hardware keyboard shortcuts on iPad.

FOR EVERYONE Twelve themes including High Contrast and colour-blind palettes, giant digits, a readable font, reduced motion and VoiceOver labels. Add separate players for the family, including Kids profiles with picture grids and no purchase prompts.

PRIVATE BY DESIGN No account, no sign-in and no ads. Your games and stats stay on your device. Game Center is optional.

SUDOKU ZEN PRO Sudoku Zen is free to play, with a fresh Daily every day. Pro adds: • Unlimited Coach hints (3 free a day) • Unlimited Expert and Master puzzles (1 of each free a day) • All 30 Academy lessons (first 5 free) • Every variant, every week (1 free a week; mini grids always free) • The full Daily archive (last 7 days free) • Unlimited scans, rewind, all themes and soundscapes, detailed insights and rare garden plants

Pro is available as an auto-renewing subscription, billed weekly or monthly. The price is shown in the app before you buy and may vary by country. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings.

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