Clean Sudoku: Puzzle & Solver

Clean Sudoku is the classic number puzzle without the clutter: no ads, no subscriptions, just you and the grid. Play 8,000 puzzles across four levels, take on a new Daily Challenge every day, or point your camera at a sudoku in a newspaper and play it or solve it in seconds. DAILY CHALLENGE • A new puzzle every day, with a calendar of the days you've solved • Keep your streak going with an optional evening reminder SCAN ANY SUDOKU • Photograph a puzzle from a book or newspaper, or pick one from your photos • Fix any digit the scanner misread, then play it or see the solution LEARN AS YOU PLAY • Hints explain the next logical move instead of just filling in a number • Notes, automatic notes, and highlighting of mistakes and conflicts TRACK YOUR PROGRESS • Your fastest games for every level on a leaderboard • Statistics with best and average times, and 12 achievements to earn PLAY YOUR WAY • Easy and Medium to start; unlock Hard and Extreme as you improve • Unlimited generated puzzles, or create your own and share it as a code • Light, Soft and Dark themes and a color-blind-safe board • Optional timer, sound and three-mistake limit, with one second chance per game • Plays offline and saves your game automatically • Available in 14 languages How to play: fill the 9×9 grid so that every row, every column and every 3×3 box contains the numbers 1 to 9 exactly once.

Daily Challenge — a new puzzle every day, with streaks and a calendar