This Sudoku aint free, but its cheaper than a good meal, and you get all these wonderful features:* Its yours forever. No in-app payments. No subscription shenanigans.* No ads. No tracking. No nonsense.* It works offline. In fact, it doesnt even care if youre online.* It has an unlimited number of puzzles, in four levels of difficulty.* It supports infinite undo and redo.* It has notes, for when youre not yet sure what number goes where.* It supports gestures: * Swipe up/down on the board to switch between numbers and notes. * Swipe right/left on the board to go to the next/previous number.* Share puzzles with your friends, see whos smarter after all.* Use your phones camera to scan printed puzzles and play them in the app.Have fun!