SudoSpark: Daily Sudoku

SudoSpark is a simple Sudoku game designed for learning, relaxing, and improving your thinking skills. Choose from Easy, Medium, Hard, or Expert difficulty and start solving classic 9x9 Sudoku puzzles. Take on a new Daily Challenge each day to build your streak, use Notes Mode to mark possible numbers, undo moves, erase mistakes, and get guided hints that explain the row, column, and box step by step. Your unfinished games are saved automatically, so you can continue anytime. SudoSpark also includes local statistics, daily streak tracking, light and dark themes, offline gameplay, and requires no account, letting you play, learn, and enjoy Sudoku at your own pace.