Honestly the best app I’ve ever had
I played the logic whiz game which has all kinds of variations of sudoku and fell in love with the more logical approach to the puzzle. Out of all of these I found the killer variations the best, and behold I found they had an app dedicated to the killer variation. I have played these puzzles for over a year and they are still bringing out new puzzles monthly on every level of difficulty. this app is the holy grail of my mental health. 100% download