SudokuMe

SudokuMe is a free, ad-free Sudoku game built for players who take their puzzles seriously — and for those who want to find out just how good they really are. Four difficulty levels. Endless puzzles. Choose from Easy, Medium, Hard, and Fiendish. Every puzzle is generated fresh using a proven algorithm, so you never play the same board twice. Easy eases you in with naked singles. Fiendish demands X-Wing logic and genuine deduction. Each level has its own generation style, clue density, and challenge character. A solving experience designed with care. The board uses a warm paper aesthetic — soft yellows, golden highlights, dark brown lines — that is easy on the eyes during long sessions. Cell highlighting shows you every peer of your selected cell instantly. Notes mode lets you pencil in candidates; Auto-note (Easy and Medium) removes them automatically as you place digits. Undo, Erase, Pause, and full state persistence across app restarts are all included. The Resolver. Enter any Sudoku puzzle from a book, newspaper, or another app. The Resolver counts solutions, classifies difficulty, and can solve the puzzle for you — or hand it off to the game engine so you can play it yourself with full timer and purity tracking. Purity Score — a better measure of how well you solved. Time alone does not tell the whole story. SudokuMe tracks every placement, undo, erase, and note you make and computes a Purity Score from 0 to 100. A perfect solve — no wrong digits, no corrections, minimal notes — earns 100. Purity affects your points and your leaderboard standing, rewarding players who solve cleanly, not just quickly. Daily Challenge. Every day, a few boards — Medium, Hard, and Fiendish — are published worldwide. Every player competes on the same puzzles. Solve them at your own pace, replay for a better time, and see where you rank against the global field. Points are calculated from difficulty, your time relative to all other solvers, and your purity score. No two boards are the same, and no board is ever reused. SudokuMe Live. Scheduled live sessions pit up to ten players against the same board at the same time. Everyone starts simultaneously, solves on their own, and the results are revealed together. This is real-time competition — no information about other players leaks during the session, so every solve is genuinely yours. Hall of Fame. Three leaderboard categories track your competitive standing over time. All Time rewards cumulative excellence. Efficiency rewards quality over quantity — points per board attempted. Rising rewards current form, tracking only the last 30 days and giving newer players a real path to visibility. A Countries tab lets you see how your country ranks against the world. Your identity, your data. No email address, no password, no account to create. Your player identity is a single UUID stored on your device. If you get a new phone, a QR code transfer moves your entire competitive history — points, rankings, personal bests, profile picture — in seconds. Free to play. Optional upgrades. Solo Easy and Medium are permanently free. Hard and Fiendish difficulty, the Resolver, and the full competitive Multi-layer are available with a 30-day free trial. After the trial, a one-time purchase unlocks the solo extras; a low-cost subscription keeps Multi active. Players who prefer not to pay can unlock features one session at a time by watching a single opt-in ad — never served automatically, always your choice. No ads unless you choose them. No paywalls on day one. No data harvested. Just Sudoku. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/