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.