A new Daily Challenge every morning, seven levels from Beginner to Grandmaster, a Sudoku you can play right on your Home Screen, and boards dressed in hand-made themes. Every puzzle has one solution you can reach by logic alone.
Free on iPhone and iPad
Solved. The app has a new puzzle like this every single day.
Everything you need for a good puzzle and nothing that gets in the way.
Every morning there is a fresh puzzle waiting. Solve it to grow your streak, fill in your week, and see how your score compares on the Game Center leaderboards.
Stuck? A hint fills in the next cell a careful solver would find. Wrong digits are flagged first, so a hint never builds on a mistake.
Best Solving Tricks is a short course in how strong players think: scanning, naked and hidden singles, pairs and triples, pointing pairs, box-line reduction, the X-Wing, the XY-Wing and the Swordfish. Each lesson is illustrated on a real board.
The widget is a real 4×4 puzzle you solve without opening the app. Lock Screen widgets keep your streak in view.
Limited-time events like Hallow Fortnight bring Pumpkin Grids, a reward track and themes you can only earn there.
Over twenty boards, from Sakura and Galaxy to Aurora, Neon Night and Royal Gold, many with gentle animation.
Every puzzle is generated on your device. No signal needed.
Stats, streaks, coins and themes follow you to your iPad and survive a reinstall.
Every board is checked to have exactly one solution, reachable without guessing.
Zen mode, cell-first or number-first input, and a mistake limit you set yourself.
Milestones for wins, streaks and perfect games, synced with Game Center.
Sudoku Woo speaks 22 languages, from Japanese to Romanian.
Fill the 9×9 grid so that the digits 1 to 9 appear exactly once in each of these three places.
Each horizontal line holds 1 to 9 with no repeats.
Each vertical line holds 1 to 9 with no repeats.
Each of the nine boxes holds 1 to 9 with no repeats.
Start where a row, column or box is nearly full: if eight digits are already placed, the ninth has only one place to go. When nothing is obvious, pencil in the candidates for each cell and look for a cell left with a single option. Try it on the board above.
Yes. Sudoku Woo is free to download and every puzzle, level and the Daily Challenge are free to play. Optional ads and in-app purchases add extras such as themes, and Remove Ads turns off forced ads for good.
Yes. Every puzzle is generated on your device, so you can play on a plane or underground. Your progress syncs with iCloud the next time you are online.
iPhone and iPad running iOS or iPadOS 17 or later. Your stats, streaks and themes follow you between devices through iCloud.
There are seven levels, from Beginner to Grandmaster. Every puzzle has exactly one solution that can be reached by logic alone, with no guessing.
One new puzzle every day, the same for every player. Solve it to keep your streak going and compare your score on the Game Center leaderboards.
Yes. The Best Solving Tricks lessons walk through real techniques, from scanning and naked singles to the X-Wing, XY-Wing and Swordfish, each illustrated on a real board. Hints fill the next cell a careful solver would find when you are stuck.
Yes. Past Puzzles lists earlier Daily Challenges to replay as practice. Replays don't change your streak or the leaderboards.
Yes. The Home Screen widget is a playable 4×4 Sudoku you solve right from the widget, in small, medium and large sizes. Lock Screen widgets show your Daily Challenge streak.
22 languages, including English, Spanish, German, French, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Polish, Turkish and Romanian.
Download Sudoku Woo for iPhone and iPad.
