Best SUDOKU App for iPhone / iPad / Mac (Apple Silicon)

Indie developer Tomoyoshi Natsui announces the release of 'One Digit Field 1.6' for iPhone / iPad / Mac (Apple Silicon). It is a puzzle game where you put numbers one by one in a 9x9 square while thinking carefully. The rules of the game are very simple, and the goal is to put numbers in all the squares according to the following placement rules.