Swedoku: Learn Sudoku

Swedoku is a clean, fast sudoku app with Scandinavian design roots, built for players who want to actually get better at the game — not just fill in numbers. WORKS FULLY OFFLINE No internet connection needed to play. Every puzzle is generated on your device, so you can solve on a plane, underground, or anywhere with no signal. SEVEN DIFFICULTY LEVELS From Very Easy to Extreme, each level is generated to require specific solving techniques — not just randomly removed numbers. Extreme puzzles genuinely require advanced techniques like X-Wing and Swordfish to solve, so the difficulty you pick is the difficulty you get. HINTS THAT TEACH, NOT JUST SOLVE Stuck? Swedoku's hint system doesn't just fill in a number — it names the technique (Naked Single, Hidden Pair, Pointing Pair, Box-Line Reduction, Unique Rectangle, X-Wing, Swordfish, and more) and explains the logic behind it, so you can apply it yourself next time. SCAN A PHYSICAL PUZZLE Got a sudoku from a newspaper or puzzle book? Snap a photo and Swedoku reads the grid automatically, so you can solve it digitally with notes, hints, and undo — no more erasing mistakes. (This one feature requires an internet connection; everything else works offline.) SMART NOTES Pencil in candidates manually, or let auto-notes fill them in for you. Tap a number to highlight every matching candidate across the board, making patterns easy to spot. CHALLENGE A FRIEND Share any puzzle with a single link — friends or family can open it and play the exact same grid you're working on, or pick up right where you left off if you share your in-progress game. No account needed on either end. TRACK YOUR PROGRESS See your best times and completion stats per difficulty level, so you can watch yourself improve over time. CLEAN, MINIMAL, SCANDINAVIAN Swedoku's look draws on Scandinavian design principles — clear, uncluttered, and built to get out of your way so you can focus on the puzzle. NO ADS. NO TRACKING. FREE. Swedoku has no ads, no in-app purchases, and no analytics or tracking of any kind. Your game progress stays on your own device. Whether you're a beginner learning your first techniques or an expert chasing a personal best time on Extreme, Swedoku is built to make you a sharper solver — one puzzle at a time. Questions or feedback? Use the Feedback link inside the app any time.