Description: Get the popular Sudoku of the Day daily puzzle challenge FREE for your iPhone or iPod touch. Every day download the featured puzzle at your chosen difficulty level via wi-fi or mobile data connection, complete it and submit your time to see how you compare with other players worldwide. More than 30,000 unique players every week are already enjoying this daily Sudoku challenge. Can you top the leaderboards?Sudoku of the Day includes 1 puzzle each day at 6 difficulty levels from Beginner through to Diabolical, and includes manual or automatic pencilmarks, a smart hint system, and hold & highlight, which enables you to highlight specific numbers or pencilmarks.In-App Purchases are available:• to remove advertising from the game• to buy packs of extra puzzles when you have extra free time or want to play without a data connection;• to unlock all the features found in Astraware Sudoku including an unlimited supply of puzzles, a puzzle solver, to enter your own puzzles, and remove advertising.* Daily puzzle download requires data connection (mobile or wi-fi). *