Sudoku: Puzzle Brain Game

Sudoku as it ought to be played: daily grids, four proper difficulty levels, and a hint system that teaches you the logic instead of just handing you the answer. Most sudoku apps deliver a board and a timer. This one is built for players who want to improve. Every puzzle is generated on your iPhone and verified to have exactly one solution, so no guessing required. When you get stuck, a hint doesn't just drop a number in — it names the logic that put it there ("Naked Single: only one number can go here"), so the pattern sticks for your next grid. And when the classic 9x9 becomes too easy, seven variants are waiting. WHAT YOU GET - A fresh Daily Challenge every morning with a streak counter and month calendar - Four difficulty levels — Easy, Medium, Hard, Expert — properly calibrated so you're never bored or stuck - Seven puzzle variants: Diagonal, Hyper, Irregular, Killer, Color and Giant 12x12 and 16x16 - Hints that explain the reasoning, plus a techniques guide covering Naked Single, Hidden Single, Naked Pair, Naked Triple, Hidden Pair, Pointing Pair and Box-Line Reduction - Pencil notes, undo and redo, auto-check for errors, row/column/box highlighting and a hide-used-numbers option — proper tools for tackling Expert boards - A stats dashboard tracking games played, win rate, best times per difficulty, current and best streak, total mistakes and hints used, plus 17 achievements to pursue PERFECT FOR - Commuters and waiting-room players who need a puzzle that works with zero mobile signal - Beginners who want Easy boards alongside a clear guide to the techniques that solve them - Experienced solvers seeking out Killer, Irregular and 16x16 Giant grids - Anyone building a daily habit — one puzzle each morning, streak intact WHY NOT JUST DO SUDOKU ON PAPER? Paper will happily let you stack ten numbers on top of a wrong one before you notice. Auto-check flags the error the moment you make it, undo walks back a bad move without an eraser hole, pencil notes disappear cleanly rather than smudging, and your best times and streaks are logged automatically. You'll also never run out of puzzles — they're generated fresh on demand, for ever, with no newspaper subscription and no internet connection required. PRIVACY Every puzzle, stat and streak lives on your iPhone. No account, no sign-up, no cloud sync, no tracking and no ads. FULL ACCESS Sudoku Premium unlocks the complete game: all four difficulty levels, the Daily and Weekly Challenges, Endless and Time Attack modes, all seven variants, unlimited hints, all 8 board themes and the full stats dashboard. It's available as a weekly subscription, a yearly subscription, or a one-time lifetime purchase — pick whichever suits you best, and restore it on your other devices any time. Start today's challenge and build your streak. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? [email protected]