Sudoku - Classic & Killer

Train your brain with the ultimate Sudoku experience. Thousands of classic number puzzles, anytime, anywhere, fully offline. Sudoku - Classic & Killer is a polished Sudoku built for iPhone and iPad, designed for quick daily sessions and deep logic training. Whether you are discovering number puzzles for the first time or chasing a personal best on Expert, there is a difficulty and a mode made for you. SUDOKU FOR EVERY SKILL LEVEL - Five difficulties: Easy, Medium, Hard, Expert and Master - Over 10,000 handcrafted puzzles, each with a single unique solution - New puzzles added every week - Daily Challenge with monthly trophies to collect - Killer Sudoku mode for an extra layer of logic SMART FEATURES THAT HELP YOU IMPROVE - Pencil notes to track candidates, just like on paper - Auto-notes and auto-check to speed up your solving flow - Explanatory hints that teach technique, not just the answer - Duplicate highlighting to spot mistakes instantly - Unlimited undo, redo, pause and resume A CLEAN, RELAXING DESIGN - Minimalist interface built for focus - Light and dark themes for day and night - Adjustable number size and colour accents - Distraction-free board with smooth animation - Sound effects you can switch off TRACK YOUR PROGRESS - Detailed statistics for every difficulty - Personal bests, streaks and win rates - Progress charts as your logic sharpens - Achievements and milestones PLAY ANYWHERE - Fully offline, no connection required - Made for commutes, flights, waiting rooms and bedtime - Auto-save, so you never lose a puzzle in progress - Built for iPhone and iPad, portrait and landscape WHY PLAY EVERY DAY Sudoku is a daily workout for your attention. Regular play sharpens memory, builds concentration and gives you that small, satisfying win that makes the rest of the day run smoother. Download Sudoku - Classic & Killer and start your first puzzle in seconds.